Hello, I have a windows 7 oem disk that I purchased and installed on a new desktop I built. I have a laptop that is running Vista and it has come time for it to go. I want to install Win7 64 on the laptop but would like to know if there is a way to use the Win7 disk I already have. I don't care if I have to do an upgrade or clean install on the laptop, whatever it takes to get Vista off. Any thoughts????