I have four sat system(110,119,129 and 61.5) connected to two receivers( one dual tuner HD and one single HD tuner). The sats are connected to dp44 multiswitch. I have an old receiver(legacy 3700) from my previous house which I want to reactivate. DO I need a dishpro adapter for it to work?. If yes where exactly do I need to connect. Can someone explain the connection tree to me. The new receivers are kinda complicated for my old folks.