I have a 47 inch LG LCD HDTV and I have a dish network box and that is how I get my TV. The issue I have now is that I went and picked up a 5.1 RCA DVD Dolby surround sound system and I can't get my 5.1 speakers to work when I am watching tv. The surround sound only works on my RCA DVD player. I want to be able to watch my dish network in 5.1 do I need more cables or is there a wiring diagram that I can reference on the internet that shows me how I should have my dish network box hooked up in correlation to my DVD surround sounds system?