Usually DVD players have 2-3 video hookup options and 3 audio hookup options. Choose the output format with the best quality that is supported by your video and audio systems.

On many TVs you will need to switch the TV to auxiliary input. You might need to tune it to channel 0 to make this happen.

If you want to hook multiple devices (DVD player, VCR, cable/satellite box, WebTV, and so on) to a single TV, you need one of the following:

a manual audio/video switchbox (~$30 at electronics suppliers such as Comtrad);

a TV with multiple inputs;

an A/V receiver (to switch between video sources via remote control). If you plan on getting an A/V receiver, make sure it can handle the video format you want to use (component or s-video).