I am using one right now. Just set it up with no dish and you can pull out the activation card. Scan for digitial channels and you should be set. You don't get a guide though. That is the only thing I miss. I think it has a channel 3/4 switch for the coax out. Many older TV have composite out also you could hook up to.
You can use that one on a computer monitor I believe. Doesn't it have VGA out also. Just have to find some speakers.