Apart from the obvious:
Backup/copy anything you want to keep (photo's, documents and music being the obvious)
Make sure you have ALL you drivers for things like:
Motherboard, Modem, graphics card, printers, scanners etc etc
Go into the bios (usually just press delete at first boot) set first boot device to CDrom)
Restart with XP OS disk in the CDrom drve, press when prompted "boot from CDrom"
F8 except
Repair is not recommended, go for a reformat, quick format NTFS is fine, then XP will auto setup, just follow it through.
Once into Windows install motherboard drivers first, then graphics/sound/modem etc etc
Martin
Martin
Replying helps further our knowledge, without comment leaves us wondering.