Is your TV HD? If not, you're limited to 640x480 anyway! You could select a higher resolution but the VGA-to-NTSC circuitry would have to scale down to 640x480...
If you have an HDTV, however, you should try searching for "quake" and "games" -- there are lots of discussion threads already.
If you have an HDTV, however, you should try searching for "quake" and "games" -- there are lots of discussion threads already.