How to uninstall and deactivate Windows 7 from a computer?
 

I am using Office 2010 Pro and I am considering getting Windows 7. I have been shopping online and I have found Office Pro Plus 2010 64bit and Windows 7 Upgrade. When I think of an upgrade, I think of it as something to improve Microsoft Office 2010 Professional Key I already have. Is this the case with Windows 7 Professional Key? Is it an improvement on Windows 7? If so, why hasn't the upgrade been integrated with the Windows 7 software?