Hi all, 1st post as a new member Anyways, my desktop pc has vista Home Premium installed legitimately. What i want to/going to do is do a fresh install of Windows 7 Ultimate using a loader form here. BUT what i want to know, and sorry if its a noobish question, if, for some odd reason i could not install windows 7. Could i re-install Vista home premium using an un-touched .ISO, and simply write my key from the side of my tower, and use it to register Vista again? The main reason i ask, is because i thought the key can only be used once? Or can i re-use the key on the same system as long as its a fresh install? Thanks for any information any one gives me. I just want a back up plan in case something goes wrong lol.