High Definition?

Thanks for all the advice - it's either comcast or Directv which I already subscribe to. I live in a valley and OTA might not be an option. Does directv offer HD with the networks?

DirecTV doesn't offer local HD. That will require an antenna. Going to HDTV is the single biggest improvement you can do the the video system after getting an HDTV set.

Just got a new TV and a OTA HD receiver (Samsung 351). The OTA is working fine for me due to a clear shot to the broadcasting tower. Do have some ghosting however.

Definitely try out Attenaweb.com. Type in your address and out comes the results. Also try Avsforum for additional information.

For DirectTV, there is a OTA attena from Terk that clip to the dish. You might as well add that at the same time you add the 3rd dish to get HD. It might just surprice you. I could get lots of HD channels using a simple bow-tie hanging outside on the first floor of a 2-story house.

Trying to improve the multi-path on the other hand is a different story.