My friends and I went to BestBuy for some stuff. Basically gift returns, exchanges from Chrsitmas. I bought Windows 7, and took it home. About 7 minutes ago, I decided to run it with Parallels 5.0. I have an invalid product key. This is a warning to all, make sure you know what you are buying before you buy, especially if its a Windows product. I guess I purchased an upgrade from Vista to Windows 7. I am really angry because the dude at BestBuy told me this would work, and he was wrong. Now I can't return it for a refund.