It is possible that your video card has a video-in plug that is yellow in color and fits the male yellow plug to your Genesis. In that case, you could just 'plug and play', but few video cards have video in. If you are willing to spend $10 for this ability and wait a few days, the Plextor PX-TV100U
is for you. It plugs in thru the USB interface, and can be viewed full-screen using the included software that includes a TV tuner and all the little extras. If you ever want to record the video from the input, the easiest way is to open windows movie maker and click capture video in the sidepane.
No pessimist ever discovered the secrets of the stars, or sailed to an uncharted land.