I am trying to get a good picture on my nec42mp3 plasma from sky. Have tried RGB to component & av-scan converter to vga. Composite and component have the same result, lots of ghosting and artifacts especially on moving skin tones. The AV-scan converter/line doubler got rid of the artifacts but made the picture jerky, almost like a strobe effect. This model of Plasma is supposed to have a built in scan converter but I am not impressed. DVD playback is wonderful...........Please help!!!