I am contemplating updating my desktop from 2000 to XP, and have one question. When I install XP, will some of my 2000 files still remain on my drive once the installation is complete? What I mean is, when I have reinstalled 2000 in the past, some of my files (from games, programs, applications) have still had folders in the Program Files folder even after I reinstalled (and I thought reformatted too). This not that big of a deal, but when I go to XP, I want the drive to be squeaky clean, like nothing was on it previously. How can I achieve this without installing to a different (without OS already on it) drive?