If you are looking for an alternative to Microsoft Windows Sysinternals Desktops [4], check out this great utility which allows you up to 9 virtual desktops with tons of great options and modules.
Information: http://virtuawin.sourceforge.net/ [5]
Source: http://virtuawin.cvs.sourceforge.net/virtuawin/ [6]
Links:
[1] http://pulse.veltsos.com/category/it/software/foss
[2] http://pulse.veltsos.com/category/it/software/software/os/microsoft
[3] http://pulse.veltsos.com/category/it/visualization
[4] http://technet.microsoft.com/en-us/sysinternals/cc817881.aspx
[5] http://virtuawin.sourceforge.net/
[6] http://virtuawin.cvs.sourceforge.net/virtuawin/