the problem is to be able to buy a full version. Those who only have the money to buy the upgrade will have to wait and see what type of installation that Microsoft will allow us to do.. seem like we won't be able to do what we did with vista ( format, install without key, then reinstall with key) Win 7 upgrade will have to be installed on top of a legit Vista B) anyway let's hope for the best, I also want a clean install.. or else I'll format, install vista without SP , activate it, then install win 7 on top right away. That should be almost like a clean install.