Were you able to get 1366x768 resolution from DVI to HDMI connection from PC to TV?
Don't know if its specific to my setup but if I force 1366x768 on my HDTV, the picture shakes slightly and its really annoying. In the end I set it to 1280x720 (720p) and this works fine. I did compare the quality even though it was shaking at the higher res and I couldn't see any quality difference at all.
Also, I originally used component to connect the tv but wasn't happy with it as I had to position/resize the picture myself so in the end went for a dvi connection and not only does it size/position correctly, I believe the PQ is noticeably better. For reference the tv hated 1366x768 using component or dvi.