Regarding the Superdish, the answer is yes and no. With the current DishPro 4:3 switch, no. You will need two feeds to supply the dual tuners. In 2004, Dish will release a DishProPlus 4:4 switch that will allow you to split a single feed with a special diplexor to supply both inputs of a dual tuner receiver. I don'believe there is anyway to do this with a legacy Dish500 setup.