I would like to upgrade to Windows 7 Home Premium. I currently have a Dell PC that came pre-installed with Vista Home Premium on it. I can't remember if the PC came with a Vista CD or not (I think nowadays Dell just offers the factory restore option from a hidden partition), but if it did come with a CD I'd rather not try and find it.
My question is do I need to have the Vista CD in order to successfully use the Windows 7 Home Premium upgrade? Or, if not, what info do I need to have ready in order for the upgrade to work? I don't want to purchase Windows 7 upgrade version only to find out that I need some piece of info that I don't have.