[villages07]

Skip ... I have two HD cable boxes; for awhile, I was getting On Demand on one but not the other (error code 07 I think).

The one with no "On Demand" had the cable out of the wall hooked to a DVD/VCR combo then hooked to the TV. The DVD/VCR just died so I reconnected the cable direct from comcast box to TV and now On Demand works. Maybe the DVD/VCR was degrading the signal or maybe I had an inferior/too long cable. You might try to rewire. You will need to power cycle your cable box to reinitialize it (unplug it, wait 30 seconds, plug it back in).

Channel 36/CNBC does pixelate a lot;

I will end up with 2 HD set top boxes and 2 DTAs; pay for the HD boxes and the DTAs are "free"; we just had a comcast increase but I suspect we will see another within a year.