The most important thing is the input (tv tuner card) and output (graphics card) other than the other basic PC components right? If I buy a HDTV that has the standard hdmi/component/s-video which connection would give me the best high definition signal? Most of the sets I see in stores only have a d-sub and not a dvi connection. What would be best? Also if I get a service like AT&T Uverse does that come with a set top box that I'd have to connect to my tv tuner? What connection would this use (coax?) and would there be any high def degradation? Thanks for any help.