I recently joined Dish and got a 722 with a 3 LNB dish that is hooked up to a standard def tv in the bedroom and a High Def TV in the living room. I did not expect to have to hook up the standard TV in the spare bedroom but need to do that now. What is the cheapest way to get standard def reception to this 3rd tv that was never hooked up to the dish? What reciever do I have to get and how to hook it up and I am sure this will cost addtional from dish right? thank in advance.