text: no i do not, because if you do you will have some vista files that cannot be installed on xp, or you might just love vista, but after you install vista RC1, because it is free, it will expire one day after about 6 months from the date you install it, and if you do now buy an upgrade disk for windows vista, the computer will now boot up and you will have to sweep the hard drive with the disk that came with the manufacturer of you computer, but if you do that you will not have any of your  files that were on xp or vista, you will only have a clean install of microsoft windows xp, and what i am saying is that would not be a wise decision to upgrade your computer to vista RC2, if you want to upgrade it buy the disc from microsoft when vista comes out.