Ok, so I want to start getting local channels through my DirecTV receiver. Here is my current setup: Location: Las Vegas Receiver: RCA UltimateTV w/2 inputs Current Dish: RCA 18" with single LNB (two connections for UTV) Apparently, I need the 24" elliptical dish for local channels, according to the DirecTV site. Am I going to need 2 LNB's or just the one? If I do need 2 LNB's, how do I hook it up with my receiver that only has two satellite inputs? Thanks in advance for any advice. Oh, forgot: I am NOT receiving any HDTV signals and do not plan on for now.