Hi. Just plugged in my sony bluray w/ goog tv box today. Have a comcase cable box. Everything else seems fine, but the screen while watching tv isn't fullscreen (even w/ HD channels that were fullscreen prior to installing the GTV box). I set up the screen area (the one where we mark all 4 borders till we can't see the blue screen anymore) and the resolution in settings is set to Auto. Aspect ratio is set to original too. So what am i missing here? Please help !!