I got my Vista upgrade today. I was able to install Home Premium and Ultimate with out a key, and with no imediate signs of having to activate it, despite being told i might have to during the install (when i skipped putting the key in) and this was on my custom built PC, not a Dell. I only used both installs for a little while basically just to try Vista out, ill probably end up buying a retail version anyway. If anyone knows why, or if i will have to activate it, clue me in. I know when i tried to install a Dell XP on a non-Dell machine, it would prompt for activation with in minutes of completing the OS install, and the keys i had wouldnt even work, however i used each install for a good few hours with no sign of activation, yet it still DL-ed the updates and worked just fine.