Here's a site that helps you figure out the potential for support.
http://www.dishpointer.com/
Put in your zip and use the pull down to select Dish 1000.4 - the eastern arc bird. A Google Map appears with a line pointing from your location to the satellite. You can sort of tell if you'll have a problem. In my case, unfortunately, yes... I was looking forward to dumping TWC!
Satellite: Dish 1000.4 (61.5W, 72.7W, 77W)
Elevation: 39.6°
Azimuth (true): 182.0°
Azimuth (magn.): 197.5°