well to boot from that cd (as long as it is bootable,which it probably is) u gotta reboot tha pc with that windows xp cd in tha drive and then it will either ask u to boot from cd and it will ask u to press a key to boot from cd or it will do it automatically, if not then u have to get into your bios and switch your first boot device to CD-ROM then save settings in tha bios and reboot.
if you dont like feel safe getting into your bios u can use this floppy disk creator program. (which i gave u links below)
once of these options should work if they dont u can create boot floppys using this program here to make it boot from cd (you will need about 5 floppy disks)
these are for "home edition"
http://download.microsoft.com/downlo..._EN_HOM_BF.EXE
and these are for windows xp "PRO"
http://download.microsoft.com/downlo..._EN_PRO_BF.EXE
the above files are for use with a non SP1(service pack 1) windows xp cd. (which u probably have)
also once u get it to boot it will give u an option to format tha drives, this is when u want to format drive c: (use the full format option) then after it completes EVERYTHING on drive C: will be gone this is when it will proceed to install windows xp
PROBLEM SOLVED!!!
