So you want to buy a new HDTV, or perhaps you recently bought one. Which inputs does your set have? Does your set have HDMI? Does it have DVI? Better yet, does it have both? Most importantly, why do you care? If you don't plan on playing one of the new high-def DVD formats, you might not care. Then again, did you spend two mortgage payments on a television just to watch what's on cable? I doubt it.