Resolutions varry a lot with TVs. I believe the max res on an older style tv was around 720x480. I think the max res of a big new HDTV is around 1920x1080 but you would need a tube bigger than 30" for that.
I would go for a TV that is a definate HDTV and not just HDTV compatable. I read somewhere online that HDTV compatible might mean that the tv can display the signal but it's max res is actually lower so the signal is downgraded to fit the screen.
You can probably find lots of info on this subject w/ a simple google search. Just look for HDTV resolution or something
Just look at the native res on the screen before buying it to see if it is high enough for you. My friend has a big wideaspect Samsung TV and it even has DVI inputs, that would be convenient
<A HREF="http://www.folken.net/myrig.htm" target="_new">My precious...</A>