7Command Line options for XP/2003/Vista
(All of them may not work in your PC. It depends on what components you have installed. Some of them donot run on Vista.)
This list of commands found here are shamelessly copied from the site http://www.iblogall.com/2006/09/117-run-commands-in-windows-xp.html.
Just go to START > RUN > type the command here