there are a number of methods that will allow you to make the connection. Many computers have incorporated composite (RCA) or S-Video (TV-Out) output that will either mirror or, better yet, extend your desktop beyond the monitor. For desktop systems, there are numerous AGP video cards available that offer a variety of video outputs. For example, ATI's Radeon X1950 PRO
video card includes composite, s-video, and component video connections for analog signals.
Of course, it all depends on what inputs your television can accept. If it has multiple input ports, remember that there is a hierarchy in terms of signal quality among the three typical types of connections, which, from lowest to highest, is composite, S-Video, then component video. So opt for the highest quality connection supported by both devices. Many older or more basic televisions may only have a coaxial cable connection. In this case, there are video cards with coax outputs and scan converters that will pass the signal through a coaxial cable directly to your television. Oh, and remember that you'll also need to connect your sound card's LINE-OUT connector to the TV for sound.
The tricky part may be finding the right cables to go from the computer to the TV, since there are several types of RCA (1 or multi-port) and S-Video (4-pin and 7-pin) connectors. One product I found, the Pro S-Video to 3 RCA
cable allows you to connect your desktop or laptop computer's S-Video to your TV. These adapters are compatible with both S-video 4-pin and 7-pin receptacles and also connect your PC's stereo audio output to the TV.
But don't run out and buy any special video cards or cables yet... There are certain limitations of using older CRT televisions as computer displays that can easily render the advantages of size and affordability almost completely negligible. Perhaps the greatest constraint is the relatively low resolution of standard, tube-based televisions. Because of their design to accept NTSC (North American), PAL (European), or SECAM signals, good old-fashioned analog television sets generally cannot display resolutions greater than 640x480. That was barely adequate for a 14-inch monitor ten years ago, so just imagine how it might look on a 32-inch TV screen. Have you ever tried to read those fuzzy disclaimers at the end of a TV commercial? Viewing your computer's video signal through a CRT television will not yield the detail and clarity that you would normally expect, although for games and video playback it can produce acceptable results.