Multimedia Audio Controlller issues...

[l0st4zn]

ok, my problems is this i uninstalled Realtek Audio'97 on accident, but den i left it alone for 2-3 days and in those 2-3 days sounds was normal , everything was normal. now my friends came overr one day and installed STEAM, played CS no sounds, i hopped on later still no sounds, and from there no sounds. Now i installed the drivers, but the problems is, as it in the process of installin, it just reboot b4 it even complete, i cheked in sound and audio devices properties, it say no drivers are installed for this device, i went into properties it say drivers is enabled and working properly. still no sounds, now the scrn wit the volume controls etc. is all greyed out so i cant do anythin. i went into BIOS- windows audio- started- automatic so i guess is normal. now i try rollback the drivers, it say no files for this driver have been back up for this devices. there are no yellow exclamations mark or anything, is just normal. i rebooted many times, no work. system restore no work. sorry if there anything i made uncleared or didnt mentioned above, i dunt really kno muuch bout these technical stuff lol.

Computer:
Windows XP Professional Service Pack 3 (build 2600)
2.80 gigahertz Intel Pentium 4
8 kilobyte primary memory cache
512 kilobyte secondary memory cache
Hyper-threaded (2 total)

Drives:
137.43 Gigabytes Usable Hard Drive Capacity
116.72 Gigabytes Hard Drive Free Space
PIONEER DVD-RW DVR-106D [CD-ROM drive]
SAMSUNG CD-ROM SC-140C
3.5" format removeable media [Floppy dri

Local Drive Volumes:
c: (NTFS on drive 0)

Main Circuit Board:
Board: ASUSTek Computer Inc. P4SD-VX
Bus Clock: 200 megahertz

i used the realtek Audio'97 btw..
pleasse helppp!!