HDMI connectors is for high quality connection to an HDTV. the most recent version of the HDMI cable(1.3 i think) also puts the audio through the cable so there is only need for one cable(the HDMI) to output the video and audio
OK Cool, So dont worry about component, Just get DVI/VGA with adapter.
They are the same price, Would it be woth it to get the one with Component. Or not even bother... Ive never heard of diablo before