Using Your TV as a Monitor?

bpm140 asks: "I'm interested in turning my spare PC into an MP3 server, but unless I can hook it up to my home theater system, it's not really worth the effort. My biggest requirement is that I can view the desktop on my TV. Right now I'm limited to S-video, but in the future I plan on upgrading to HDTV. What are my options for getting legible text on my current TV? Any specific video card I should look at?" Are there any HDTV units in the pipe that may make this easier than it is now with current TVs? I've seen televisions with VGA inputs, before, but for the life of me, I can't remember who makes them.