Hello, It is my recent understanding that a Windows 7 OEM disc is for those that want to do something such as resell and need some sort of pre-installation of the operating system, and it is not for consumers. Is this correct? Now, the extra cost is enough to deal with, however I want to make sure that I am getting the right thing. All I want to do is run Windows 7 Home Premium on my MacBook Pro in a separate partition. This is what I want as opposed to this, yes? I believe that my local retail store only sells the "Vista Upgrade" Windows 7 Home Premium disc. It may have the retail copy of Windows 7 Home Premium that I posted as the first link but I would have to check. I have heard of people doing some sort of double install with this in order to have a working copy of Windows 7. I could be wrong about that as is was quite a while ago that I was reading about it but this is certainly not what I want even if it's possible. I simply want a copy of Windows 7 Home Premium on its own that is not an upgrade of any sort that will run smoothly on my MacBook Pro. Am I looking at the right purchase now (first link)? Thank you.