The DirecTV receiver doesn't have VGA inputs (and that wouldn't do HD anyway). The receiver has everything else though. The Sony lists inputs of RGB/YUV (which goes to a Betacam SP video casette recorder in the manual) and another RGB/YUV (which goes to a computer in the manual). Both RGB/YUVs also have one single audio input next to them (not two -- like a white/red audio). The TV also has s-video, which is curretly hooked up, but that doesn't do HD (just 480p).
Thanks for any help.