Joe,
Thanks for the answer. I had figured when Scott posted that it might be for the Hi Def., but when I checked some time back with my satellite company I specifically asked them what besides the receiver I would need to have changed and they said nothing. Of course some of their people aren't all that familiar yet with the Hi Def stuff either. Did they just bring out a three LNB mount for yours or did you have another mount already they could put the 3rd head on. Mine just has a two LNB mount bar, so I would need another mounting bar also. I am all on satellite and no antenna as I only have two TVs, one of which I never use any more.
Ron