I have a dlp projector with a 132" dia screen. It looks great with my DVD player and DVDO iScan. However my comcast cable channels are aweful. How do I correct this? I tried using a Samsung SIRT151 HDTV OTA Tuner, however the only channel that looked better was HDTV channel (which consisted of one in the DFW area). All other Digital Channels did not look any better than my comcast digital cable channels. What do I do to get HD quality using either OTA or comcast cable on a 132" dia screen?
Zeph

Zeph