We have a number of desktops/laptops, purchased over time, which have all been upgraded to XP Pro using an MS VLK purchased through TechSoup. The SA has expired on all of the desktops/laptops. The desktops/laptops are a mix of both 32 bit and 64 bit hardware. 1) Can the MS Windows 7 Enterprise Upgrade License offered through TechSoup be used to upgrade