Preface: I don't know anything about TV Tuners (yet). I also have never used Comcast HD, but I am a Comcast customer (no HDTV). So I'm looking at running MythTV on my yet-to-be-built new machine. I ...

This is my second post. My first was reguarding the crappy picture I was getting with non-hd signals through my new Polaroid 32 LCD HD Monitor. I have since returned it and now have a Samsung 40" LCD ...