Not to jump on you, but try to name your threads better, this title won't help out anyone looking for similar information after you are done with it.
Check out this thread among
many others that already talk about this:
http://www.arcadecontrols.org/yabbse/index.php?board=4;action=display;threadid=4531In addition to composite, and s-video, you could buy a TV with component inputs. This is probably the next best thing to an RGB input. It is hard to find a 25" TV with S-Video, so I doubt you will find one with component inputs. I am considering getting a 27" JVC for about $300 from Circuit City or Best Buy. Then you need an ATI Radeon 8500 or higher video card and a special adapter from ATI. That will probably be another $150 for the two.
For a serious cabinet I think the Component is worth the extra money. The only problem is that I will go broke if I do everthing the way I think it should be done...