I am using secondary user account Office 2010 Home And Business Product Key and I am considering getting Windows 7. I have been shopping online and I have found Microsoft Office Standard 2010 Product Key and Windows 7 Upgrade. When I think of an upgrade, I think of it as something to improve Office 2010 Home And Business Serial I already have. Is this the case with Windows 7 Starter Keygen? Is it an improvement on Windows 7? If so, why hasn't the upgrade been integrated with the Windows 7 software?