If you are looking to run Windows Media Center on Multiple Monitors, then you need not be an expert with computers. Maxifier is a free tool, which lets you run Windows Media Center on two display screens.
All you need to do is simply connect both the monitors and launch this program namely, Maxifier. Normally when you run Media Center maximized on a secondary display, capture the mouse so you can not move the main screen.
The Maxifier maximizes the Media Center on the secondary display, but also allows you to have control of the mouse.
HERE is the Maxifier for Windows Vista and HERE is for Windows 7.