Alright, here's the deal. I built a PC, it works beautifully but here's the OS situation... I used my Laptop's Factory OS install disc, which doesn't ask for anyything at all it just makes your HDD Windows Vista. Awesome. Well I had a formatting issue later caused by all kinds of BIOS whoopsies... to straighted that out, I upgraded Vista to Windows 7 because I had a Windows 7 upgrade just sitting around. Well the problem is I installed Windows 7 Home Premium but my CD key is for Professional. Now Windows (rightfully) thinks my copy of windows isn't genuine because the genuine one would be Windows 7 pro. I tried entering the Windows pro key into the anytime upgrade thing but that didn't work and I dont know enough about windows to do anything other than just reinstall my OS... which I will do if I have to... I just dont want to. And I would just leave it ungenuine longer but I got a webcam and there's a drivers issue and windows is freezing the device saying it won't handle the drivers because my windows isn't legit... which is fair. It's not legit. But I have a CD key plz let me use it. I just dunno how.