New to this HDTV stuff. I am looking at getting a new TV this spring and it is HD. I am not hot at getting HD on my Dish, so the question is, no problem getting the TV then and upgrading to "superdish" later on? I know you need the reciever to get the HD channels but it won't interfere waiting on it and just using the HDTV as a regular set for now. Right now there isn't enough selection to upgrade but does the "superdish" still get all the channels just like the 510 or does it only work with HD recievers? Sorry, hope this makes since, thanks Mike