Hey everyone. Recently my computer has slowed down quite a lot, and I figure its just time for the seasonly reformat. Anyways, since I got a new computer with XP on it, and it was preloaded, I have never had to install it before, and dont know how the whole "registration" thing works. So if I just format the drive and re-install, will I be able to use the computer without having to call MS and tell them and whatnot? Thanks.