Close Program/Task Manager
This is NOT a list of tasks/processes taken from Task Manager or the Close Program window (CTRL+ALT+DEL) but a list of startup applications, although you will find some of them listed via this method. Pressing CTRL+ALT+DEL identifies programs that are currently running - not necessarily at startup. For a list of tasks/processes you should try WinTasks 5 Standard/Professional from LIUtilities or the list at AnswersThatWork. Therefore, before ending a task/process via CTRL+ALT+DEL just because it has an "X" recommendation, please check whether it's in MSCONFIG or the registry first. An example would be "svchost.exe" - which doesn't appear in either under normal conditions but does via CTRL+ALT+DEL. If in doubt, don't do anything.

Operating System Differences
A number of entries are repeated due to the way that different operating systems display startup items. For example, WinMe lists "POPROXY.EXE" as "Norton eMail Protect" in both MSCONFIG and the registry whereas WinXP lists it as "Poproxy" in MSCONFIG and "Noeton eMail Protect" in the registry.

To avoid the list becoming too large, all VIRUSES are shown using the registry version which is common to all Windows versions.

Alternatively use your browsers search facility - Ctrl+F for IE users.

Key:

"Y" - Normally leave to run at start-up
"N" - Not required - typically infrequently used tasks that can be started manually if necessary
"U" - User's choice - depends whether a user deems it necessary
"X" - Definitely not required - typically viruses, spyware, adware and "resource hogs"
"?" - Unknown

Use your browsers search facility - Ctrl+F for IE users.

N	j2 Tray Menu	HotTray.exe	eFax Messenger Tray Menu system tray icon for eFax Messenger Plus. Available via Start -> Programs. Disabling instructions available here
U	Jammer	jammer.exe	Jammer by Agnitum - "Jammer is the last word in Internet security. It combines a user-friendly interface with very sophisticated and powerful security measures that protect your Windows system while you are surfing the web"
X	Jammer2nd	Jammer2nd.exe	Added by the NETSKY.Z WORM!
X	Java Runtimes	iexplore.exe	Added by the KILLAV.B TROJAN! Note - this is not the legitimate Internet Explorer (iexplore.exe) process, which should not appear in Msconfig/Startup unless you add it manually!
X	JavaScript Debugging Service	JsDbgMan.exe	Added by the DERDEO.E WORM!
X	JavaUpdate0.07	[filename]	Added by the JUPDATE TROJAN!
X	JavaVM	java.exe	Added by the MYDOOM.M or MYDOOM.N or other variants of the MYDOOM WORMS! Note - not to be confused with the valid Windows "java.exe" which resides in C:WindowsSystem (Win9x/Me), C:WinntSystem32 (WinNT/2K) or C:WindowsSystem32 (WinXP) as this resides in C:Windows or C:Winnt
X	jawa32	jawa32.exe	Added by the AGENT.BG WORM!
X	Jawa322	jawa32.exe	Added by a variant of the AGENT.BG trojan
N	JB	Jiffybar.exe	"Get Paid As You surf" application
N	Jet Detection	ADGJDet.exe	Added with SoundBlaster Live! or Audigy soundcards for headphone autodetection
Y	JetAdmin Discovery Indicator	HPJETDSC.EXE	HP JetAdmin software for HP JetDirect Print Servers. HPJETDSC.EXE is the file necessary for the JetAdmin Discovery Indicator (paper airplane in the taskbar). It gets launched automatically through the registry, and remains active to control the Discovery Indicator
X	jijbl	ezlwy.bat	Added by the REDDW WORM!
U	JobHisInit	JobHisInit.exe	Used by Ricoh network printers to enable network printing from the client
U	Jog Serve	JogServ2.exe	"Jog Dial" on a Sony Vaio laptop.  The dial can select various functions such as control audio. Needed if you use its features
U	JogServ2	JogServ2.exe	"Jog Dial" on a Sony Vaio laptop.  The dial can select various functions such as control audio. Needed if you use its features
?	jotl	millenzje.exe	??
X	Jreg	Jreg2b.exe	BroadcastPC adware variant
N	jusched	jusched.exe	Checks with Sun's Java updates site to see if newer Java versions are available. Visit http://java.sun.com or just run the Java Plug-In Control Panel
X	jushed32.exe	jushed32.exe	CoolWebSearch parasite variant
X	jutsu	jutsu.exe	Added by the RBOT-LS WORM!
U	jv16 PT TempFileTool	TempTool.exe	jv16 PowerTools' temporary file remover
U	Jv16pt Network Resident	jv16pt_network.exe	jv16 PowerTools' network resident program. Only needed if you are using the program's network features
X	jvdnlssn	fljzsshc.exe	Flingstone.com adware - and its Golden Palace Casino program
?	Jzi16	jzi16.exe	??
X	K2ps_full.task	K2ps_full.exe	Added by the JUNTADOR.K TROJAN!
N	K6CPU.EXE	K6CPU.EXE	Authenticates CPU as K6 in system properties
X	Kadoc	[random filename].exe	Added by the STAPREW TROJAN!
X	kak	kak.hta	Added by the KAKWORM WORM!
U	Kalibump	Kalibump.exe	Used with the now unsupported Kali software for on-line gaming. This is used to automatically bump up the priority of WinProxy to GREATLY improve game speed when using a SOCKS proxy
X	kalvsys	kalv****.exe [* = random char]	EliteBar/SearchMiracle adware installer
X	kalvsys	kalv***32.exe [* = random char]	EliteBar/SearchMiracle adware installer
N	Kana Reminder	Reminder.exe	Kana Reminder is a program which can be used to set a reminder to be triggered at a specified time
X	Kasper Antivirus	KASPERANTIVIRUS.EXE	Added by the SPYBOTER.GEN TROJAN!
X	Kaspersky Antivirus	KasperskyAV.exe	Added by a variant of the RBOT WORM!
X	KasperskyAv	kaspersky.exe	Added by the MIMAIL.T WORM! Note - this has nothing to do with the real Kaspersky AntiVirus
X	KasperskyAVEng	Kasperskyaveng.exe	Added by the NETSKY.V WORM!
Y	KAVPersonal50	Kav.exe	Kaspersky Anti-Virus Personal 5.0
X	KavRuns	Windll.exe	Added by the TRYNOMA TROJAN!
X	KAVutil	[worm filename]	Added by the WINTOO.B WORM!
N	KAZAA	kazaa.exe	KAZAA is a file-sharing program which unfortunately being ad-based includes "Cy-door" adware. Check here for information about "Cy-door" and here for a program that can remove it
X	Kazaa Download Accelerator Updater (required)	regsvr32 [path] kdp****.dll [* = random char]	SafeguardProtect/Veevo hijacker
X	Kazaa lptt01	kazaa.exe	Variant of the RapidBlaster parasite (in a "kazaa" folder in Program Files). It is not recommended you manually uninstall RapidBlaster but use RapidBlaster Killer - see here. Note - this is not the valid KaZaA file sharing program which has the same executable name
X	Kazaa ml097e	kazaa.exe	Variant of the RapidBlaster parasite (in a "kazaa" folder in Program Files). It is not recommended you manually uninstall RapidBlaster but use RapidBlaster Killer - see here. Note - this is not the valid KaZaA file sharing program which has the same executable name
X	KAZAACuf	9	Added by the KITRO.D (or ARGEN.A) WORM!
N	kazaalite	kazaalite.exe	Kazaalite is a file sharing client - not to be confused with the original Kazaa program. Unlike the original, this one does not contain any advertising or tracking mechanisms
N	KaZooM	KaZooM.Exe	KaZoom from Blue Haven Media - "add-on application that automatically speeds up the download process and finds the files you want with far more power than regular KaZaA searches"
U	KBD	KBD.EXE	Multimedia keyboard manager. Required if you use the multimedia keys
U	KBD MediaCenter	MEDIACTR.EXE	Multimedia keyboard manager. Required if you use the multimedia keys
X	kbddrv32	kbddrv32.exe	Added by the CRYPTER.A TROJAN!
X	kbddrvinf	kbddrvinf.exe	Added by the CRYPTER.A TROJAN!
N	KCeasy	KCeasy.exe	KCeasy - a Windows peer-to-peer filesharing application which uses giFT as its 'back end' foundation. The networks currently supported are OpenFT and Gnutella
U	KClient	kstatus.exe	KClient Kerberos client software for Win32 systems. It provides the libraries and utilities needed to use Kerberos-based PC applications developed by Computing Services such as KWeb and NiftyTelnet
N	kdx	KHost.exe	KonTiki Secure Delivery Plug In related. "The Kontiki Delivery Management System (DMS) is a secure delivery network for distribution of video, software, audio, documents, and other digital media. The Kontiki DMS enables enterprises to efficiently publish, secure, deliver and track digital media to employees, partners, and customers"
U	KE9801	DriBat32.exe	KE-9801 multimedia keyboard - required if you use the multimedia keys
X	Keenvalue	Keenvalue.exe	Keenvalue spyware - see here
U	KEMailKb	KEMailKb.EXE	Controls the buttons at the top of the Micro Innovations 650i Internet Access Keyboard. If you disable it you cannot use the buttons - like volume control or shut down
?	Kemet	kemet.exe	??
X	kern64dll	[random filename]	Added by the TARNO.J TROJAN!
X	kernctl32	rundll32 kctl32.dll, initialize	Added by the AGENT.AT TROJAN!
X	Kernel	bboy.exe	Added by the MUMU.B WORM!
X	Kernel Loader	ntkrnl.exe	Added by the CERVIVEC.A WORM!
X	kernel system daemon	ACTIVAT0R.exe	Added by the RANDEX.AW WORM!
X	kernel32	kern32.exe	Added by the BADTRANS.A WORM!
X	Kernel32	Kernel32.exe	Added by a number of VIRUSES, WORMS and TROJANS!
X	kernel32	kernel.dli	Added by the NETDEVIL.B TROJAN!
X	Kernel32	Kernel.dll	Added by the REDLOF.M VIRUS!
X	kernel32	kernel32.dlI	Added by the NETDEVIL.15 TROJAN!
X	Kernel32	krnl32.exe	Added by the EPON WORM!
X	Kernel32	Kernel32.win	Added by the GAGGLE.D or GAGGLE.E WORMS!
X	Kernel32	kernel32s.exe	Added by the SDBOT-PU TROJAN!
X	kernel32dll	guardpc.exe	Added by the FORBOT-CU WORM!
N	kernelfaultcheck	dumprep 0 -k	Used in connection with memory dumps - you can disable these by - right clicking on My Computer, selecting Properties and then the Advanced tab. Click on the Settings button in 'Startup and Recovery'. In the bottom pane - under 'Write debugging information' - click on the down arrow and then select 'None' - OK your way out
N	kernelfaultcheck	dumprep 0 -u	Used in connection with memory dumps - you can disable these by - right clicking on My Computer, selecting Properties and then the Advanced tab. Click on the Settings button in 'Startup and Recovery'. In the bottom pane - under 'Write debugging information' - click on the down arrow and then select 'None' - OK your way out
X	KernelFaultChk	sms.exe	Added by the DEADHAT WORM! Do not confuse with the valid "kernelfaultcheck" which runs "dumprep 0 -k" or "dumprep 0 -u"
X	Kernell	systems.exe	Added by the TARNO.C TROJAN!
X	Kernell32	Kernell.dll	Added by the DESTINY.A TROJAN!
X	KernellApps	csrss.exe	Added by the BANCBAN-AC TROJAN! Note - this is not the legitimate csrss.exe process, which should not appear in Msconfig/Startup!
X	Kernelw	Kernelw32.exe	Added by the INDOR.E WORM!
X	Kernel_check	wmiprvse.exe	Added by the SONEBOT-B WORM!
X	key	sysxp.exe	Added by the BEAGLE.AB WORM!
X	key	sys_xp.exe	Added by the BEAGLE.AC WORM!
X	key	winxp.exe	Added by the BEAGLE.AG WORM!
X	Key Logger	csrss.exe	Added by the BUCHON.A WORM! Note - this is not the legitimate csrss.exe process, which should not appear in Msconfig/Startup!
N	Key Text	KeyText.exe	Key Text 2000 from MJMSoft Design - utility to automate repetitive keyboard tasks. Available via Start -> Programs
X	Key1	Rlid.exe	Added by the LIXY TROJAN!
?	Key2	serve.exe	??
Y	KeyAccess	keyacc32.exe	KeyServer KeyAccess client software - "when the KeyServer program is launched, the KeyServer process becomes active so license requests from client computers can be serviced. Without KeyAccess, a keyed program cannot run, so license control is very secure"
X	Keybdcntl	keybdcntl.exe	Added by a variant of the CRYPTER.C TROJAN!
U	Keyboard Manager	MMKeybd.exe	Multimedia keyboard manager. Required if you use the additional keys
Y	Keyboard Preload Check	Preload.exe	Millenium Multi-Function Keyboard driver
U	KeyMaestro	kmaestro.exe	Multimedia keyboard manager. Required if you use the multimedia keys
U	keymap	keymap.exe	System Tray utility and background task used by games produced by Kesmai (published by Interactive Magic) and which enables you to program keys to do specific actions during the game
X	keymgrldr	rundll32 setupapi, InstallHinfSection... keymgr3.inf	CoolWebSearch parasite variant
U	KeyPatrol	KeyPatrol.exe	KeyPatrol - detects Key Loggers ("keyboard loggers" or "keyloggers") using both behavioral and pattern-matching algorithms
U	KeyWallet	KWallet.exe	"KeyWallet is a useful and convenient desktop utility that spares you the trouble of filling in your logins, passwords and other personal data manually"
X	kfienq	masbl.bat	Added by the KIFER TROJAN!
N	khooker	khooker.exe	SiS Keyboard Daemon. System Tray utility which gets installed by the drivers of the latter day SiS VGA cards. Can cause errors at startup and isn't required
U	KICKMON.EXE	KICKMON.EXE	KeepItClean - utility that deletes safe to remove files, cookies, browsing history, etc. This is the scheduler - if you don't schedule clean-ups it isn't required
U	Kill Popup	KillPopup.exe	KillPopup - pop-up stopper
N	Kinberlink	Kinberlink.exe	Kinberlink network messaging. Available via Start -> Programs
U	KK Loader	loadkk.exe	KeyKey XP Professional from KeyKey.com. "Monitor Instant Messages, Chats, Emails, Web Site URLs, Passwords, Computer Programs, Start Up and Shut Down time and much more completely undetected to the user."
U	klp	run32dll.exe	PAL PC Spy - key recorder and screen capture utility which controls and monitors everything that happens on your pc and online
U	KM9801U	MMHotKey.exe	Multimedia key handling for the relevant type of Turbo-Media keyboard. Shortcut available. Note that with this running it can crash DirectX8/9 under WinXP when a game switches to full-screen
U	kmw_run.exe	kmw_run.exe	Kensington MouseWorks - mouse/trackball software. Not required unles you use any special features
U	kmw_show.exe	kmw_show.exe	Kensington MouseWorks - mouse/trackball software. Not required unles you use any special features
N	Kodak Batch Transfer	pezdow1.exe	Part of "Kodak Picture Easy" software for digital cameras. Includes the display of an icon in the System Tray to quickly transfer photos to a PC
U	Kodak EasyShare software	EasyShare.exe	Software bundled with Kodak digital cameras to manage the connection between the PC and the Camera. Can be started manually
N	Kodak Picture Transfer Software	pts.exe	Looks for Kodak camera connection and media insertion. Available via Start -> Programs
N	Kodak Software Updater	backweb*****.exe	Software updater for Kodak Easyshare digital cameras
Y	KodakCCS	KodakCCS.exe	Kodak DC File System Driver
N	Konni Symbol Autostart	KonniSymbol.exe	Gives configuration access to RagTime Solo professional business publishing software. RagTime Solo is the private user version of RagTime 5
N	kontiki	kontiki.exe	Kontiki Delivery Manager - Windows-based client software that enables secure delivery of content to users' desktops
U	KREC32	krec32.exe	StarrCommander Pro Keystroke logging software
U	Krnlmod	Krnlmod.exe	Keylogger - see here. Given a "U" recommendation because it depends if you intentionally installed it. If you didn't, treat it as "X" and uninstall or remove via Spybot S&D (for example)
U	ktchnsnk	ktchnsnk.exe	HP program found with the Office Jet 500/600/700 series which initializes the Office Jet manager each time the computer is booted up or rebooted
X	kv3000	lover.vbe	Added by the ZSYANG.B WORM!
X	kvern16.dll	regsvr32.exe [path] kvern16.dll	DailyWinner adware
X	kw3eef76	rundll32.exe [path] kw3eef76.dll, EnableRunDLL32	LZIO.com adware downloader
N	kX Mixer	kxmixer.exe	Provides Mixer and Control functionality to KxProject Audio driver for EMU10k based soundcards