Microsoft Mouse Without Borders is one of my favorite "Garage" tools. Garage Tools are tools that Microsoft makes internally that often become part of other products, but when they aren't a fit for any of the pay products they are released as standalone download. Mouse with out borders is like the ultimate KVM, it enables sharing a mouse and keyboard, but also the clip board and files between computers. Download it here: http://blogs.technet.com/b/next/archive/2011/09/09/microsoft-garage-download-mouse-without-borders.aspx