Okay, so I bought the LCD TV with HD built in and upgraded my DishNetwork to the HD package. Now a couple questions: 1. I know some of the local (central Iowa) stations broadcast in HD, how do I get them? Do I have to buy an external antenna too? 2. On the ESPN and ESPN2 HD stations why are there black "bars" on both sides of the screen that cover about 1/3 of the picture with the words "ESPN HD"? Do I have my TV setup incorrectly or is that just how they broadcast to use less bandwidth?