Was helping a friend remove spyware/upgrade windows/etc ... and stumbled across this website. The fixes and tweaks they offer here are amazing ... fixed every one of his messed up windows problems with reg files from this page.
Check it out if your win xp computer ever gets fucked by spyware:
http://www.kellys-korner-xp.com/xp_tweaks.htm
Note: BIG page, takes a second to load.
-P