As long as your tv is a HD tv, ie hookup via Hdmi, use that, not all graphics cards have a Hdmi out, but have the dvi out. 1.

So in this case the tv comes with dvi or vga hookups, it all really depends on your tv, from what i know the dvi and hdmi methods will produce the best results.
For me with my 52 inch samsung i have a good dvi cable hooked up from my graphics card the nvidia 260 to the back of my tv as it has every connection known to man pretty much.
Jonesy
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The mother ship,Coolermaster HAF, I7 intel overclock 4ghz, , 6gb mem, 5870 crossfire, soundblaster Xfi titanium , Oh and 52 inch samsung 750 120hz. 7.1 onkyo 1200 wattss system