I'm clearing up my computer for my dad(I can't do a fresh install, this computer didn't come with its own XP disk.

Plus my dad doesn't want to waste time on the updates it would need if we used the recovery CDs), and I'm almost done. I just need to uninstall the CS3 programs, one of which I used a keygen on...
Their uninstallers are being crappy. Would just deleting their Program Files work?