Easy and fast to your question if you have a new or old Xp disk laying around do this do a re-format on the drive that had all of your info on it.To surprise you if you sell your Computer to some one you dont know he or she can really recover your file's if they have exp in computers scary huh.Even if you did a drive Scruber it's really un-rely-able.Just a good tip for you.A Format on a drive is the best way to delete all info on your pc and a fresh windows.
I have used all Windows bas system's up till now every thing from windows3.1 to present and will stay a way from vista.
hope this helps you
