HI, I'm currently running vista 32-bit and was wanting to upgrade to a windows 7 62-bit. Now i realize I have to do a clean installation but can i just buy a windows 7 62-bit upgrade package or do i have to buy the full package. Also recently i got a pop-up that says my windows is not genuine, is it because I used a copy my dad had for their computer? Would I still be able to upgrade to windows 7 if this version may not be genuine? Thanks