I am about to upgrade my system to HD and need some help. Right now I have a 522 receiver with a Dish 500 antenna. I will probably get the 722 even though I am reluctant due to complaints I have read about the receiver and the bugs it seems to have. But concerning the dish, because I live about 100 miles due north of New Orleans, LA., would I need a 1000.2 or a 1000.4 dish? I am having to install all of this myself due to issues that I can't discuss on this forum. And can any of you give me pointers or things to think about when doing this? I just do not want to make a mistake and end up wasting money.