I just got a HDTV from my grandparents for an early chrismas present and it's great. Ok now here's were I need your help. I'm on my Xbox 360 trying to change the screen resolution thing to HDTV but I can't find what kind it is. 1080I, 1080P that sort of thing. Can you help me out? It's a Sharp Aquos LC-32DA5U.