hey guys newbie here. i plan on getting a 42" plasma to go over the fireplace. i think i can sit the stand and tv on the mantle without any probs but want to wall mount it and hide the cables/wires for a cleaner look. whats the best way to run wires behind a fireplace and are there typically studs behind there to mount to? im thinking some kind of tube will make it easier to run cables/wires from behind the fireplace to where the cable jack is????? thanks for any help.