I am in the process of buying cable, running cable and buying the Sharp. I intend on running all video into a Digital Leeza scaler and then out to the Sharp. I have been told that the only way to do this is thru input 5 which is the D sub connection. I have already purchased 5 BNC/RCA from the Leeza to the Sharp but, will not bother running that cable if I cannot bypass the internal scaler thru RGB. Please, I need to know this rather quickly, the cables go in the ground in a few days and I may need to buy new ones. Please be certain about your answers, this is important. Much Thanks, Eric