i have some posts out regarding my dissatisfaction with the pq of my new JVC ED plasma when on DirecTV. Someone in the satellite forum suggested i verify whether the plasma was converting from 480i to 480p by doing line doubling. how can i verify this? i have read that manual over and over and know every selection on the set-up menu and i haven't seen a thing about it. would someone also mind explaining, or pointing me to a good explanation of, this? thanks.