What is Windows 7 and how is it better than Windows XP?
 

I am using windows 7 x64 and I am considering getting Windows 7. I have been shopping online and I have found Office 2007 Professional Key and Office 2007. When I think of an upgrade, I think of it as something to Office Enterprise 2007 improve something that I already have. Is this the case with Office 2010 Pro Plus Key? Is it an improvement on Microsoft Office 2010? If so, why hasn't the Office Professional Plus 2010 upgrade been integrated with the Windows 7 software?