I am helping my Dad with something. Here is the situation: He bought a new Dell Studio XPS laptop that came with Windows 7 64 bit, Home Premium. For some reason he bought the Windows 7 Ultimate Upgrade from the Microsoft Store for $200+ a few days after receiving his new laptop because I think he didn't like the way Windows 7 looked (interface) and wanted Ultimate so that he could make the interface look like XP. He installed it and it installed on his recovery drive. I basically had to wipe his drives and I reinstalled the original software Windows 7 Home Premium. I tried to install his Windows 7 Ultimate Upgrade after re-downloading it again from Microsoftstore.com. However Windows wouldn't install it and said that I had to use the Windows Anytime Upgrade found in the Start menu. I checked out the Windows Anytime Upgrade and found that I could re-purchase the Windows Ultimate Upgrade for $99.00 or something. It appears as if we can't install the Ultimate upgrade that we downloaded from the Microsoft store, and that we are being forced to go through the Win Anytime Upgrade....can anyone explain to me why this happening? Thanks a bunch.