I am using Vista Beta 2 build 5744 at the moment. Which is going to be the best way for me to update when Vista is released to the public. Will I purchase an OEM 64bit version of Home Premium and do a straight install of this, or will I have to reinstall my OEM version of XP first and purchase the Vista Home Premium 64 bit upgrade and install this. At the moment I cannot see me ever wanting all the extra's in Ultimate.