Welcome to LQ.
I guess, you can use the same solution as used in Linux,
having e.g. four Desktops and a 'Desktop selector'.
This feature is a part of all major Desktop managers for
*nix, KDE and Gnome to mention two examples.
( Try it out in one of your 'virtual Linux'.)
The Desktops without a running Vbox keep their normal
mouse and keyboard control.
Just Google .. virtual desktops xp ..
Last edited by knudfl; 05-01-2009 at 02:38 PM.