I have been thinking about taking the plunge and getting a sat-dish. I am currently leaning towards Dish Network, since I would be able to receive local HDTV via their system. (Currently, I receive local digital broadcasts over-the-air via attic antenna.) I am wondering what kind of problems to be wary of, and to be honest, I am somewhat confused as to what kind of extra costs will be involved in getting an HDTV receiver. I am also interested in either a dual-tuner or a second receiver for additional standard TVs in my home, and I am confused as to extra costs in this regard as well. Thoughts, suggestions, and/or advice is appreciated.