Well, with my major, I get free software, so I downloaded XP to put on my new pc, and when I installed it, it said it wasn't a verified copy. It didn't give me a CD Key for it or anything so I'm guessing I have to go buy a new OS. But Would I be able to buy a WIndows 7 Upgrade and upgrade a unverified copy of XP, or would I have to Buy a full new OS?