I currently have a 15 year old TV that is about to die on me. I'm looking at a Sony 30" CRT HDTV with a built-in tuner. I use Dish Network and have the DishPlayer DVR 522 receiver. If I wanted to recieve HDTV, would I still have to get a HDTV Dish receiver, or would my integrated receiver/tuner in my HDTV take care of that?