Ok, So i am Building an Computer for gaming purposes.But I bid on an Operating system that is used... Did not really look at the auction.Right now i am just trying to Prepare for the Worst in case the CD key does not work.I do not Believe that it is OEM. It comes in an Standard Retail Case like you see at stores.But anyway would there be anyway to transfer Vista Home Premium to My new computer that I am Building??? Please note I am not sure if this is an OEM copy.and What would i need to transfer the copy of vista to my new PC? (Receipt, Call Microsoft, etc.)