I have a 43" Samsung DLP (Hi-Def 1080p) that has my computer hooked up to it as well. It is about 4 years old.

When I first tried to hook my computer up to it I could only use the audio video jacks and the resolution was terrible. I purchased and installed a new graphics card that had a DVI output. I ran that cable to the DVI input in my TV.

The picture is remarkable.