Not all display cards have TV-Output support. Toward that end, certain companies have
released hardware products that translate a monitor image into a TV-Signal.
These are small boxes which hook from the display card into the box and from the box
output various types of TV Signals (Composite, S-Video, etc...).
An added side-benefit is that using these type of devices usually doesn't enable
MacroVision and thus you can record to tape anything you see on-screen.
For a product specification of such a device, click here.