VirtuaWin
VirtuaWin is a virtual desktop manager for the Windows operating system (Win9x/ME/NT/Win2K/XP/Win2003/Vista/Win7).
A virtual desktop manager lets you organize applications over several virtual desktops (also called ‘workspaces’).
Virtual desktops are very common in Unix/Linux, and once you get accustomed to using them, they become an essential part of a productive workflow.
http://virtuawin.sourceforge.net/
http://downloads.sourceforge.net/virtuawin/VirtuaWin_unicode_setup_4.4.exe