You could get a video card that supports TV out, but you'd have to run an S-video cable from the PC to the TV. I don't know how long a cable you'd need to get, and I don't know if there are limits to the length of a video cable before you get signal degradation. And you'd need to do the same with the audio if you wanted sound. There are wireless solutions too, that don't require you to upgrade the video card. These seem to be more expensive. A quick google of "wireless computer to TV" gives several, in the $100 to $200 range.