i bought a 50" tv a couple of years ago and it was capable of imputing 1080p but would only display 720. until now i assumed that meant i could plug in whatever but it would be downscaled to 720 but yesterday i plugged in a laptop to watch a film and it showed 19(something) by 1080 and there was a clear difference. what the hell does any of this mean. should i set the xbox to1080? can anyone explain this to me please as i just dont understand it at all. the tv is only supposed to be 720.