Well by saying DVI and HDMI are similar I meant just because you can interchange them with zero loss. I know the cables themselves are totally different.

I guess I didn't make it clear enough in my original post, but component video is not an option. This is for a computer which has both VGA and DVI outputs, so it has to be one of those or HDMI via DVI/HDMI cables. The maximum resolution it will run is 1024x768 so I'm not looking to do high definition over this cable run.