Alright, so I want to upgrade from my Windows 7 to Windows 8. I torrented a Windows 8 Pro torrent. Now can I just install it with Upgrade: Install Windows and Keep Files etc... or do I have to install a fresh copy (On My Partition)? It may be seem like a dumb question, but I don't want to screw up or anything... NOTE: I'm just running the setup via PowerISO.