Need help, Have questions. using older Slimline (no-Power inserter). I have H25-100 AND HR24-500 that I would like to install. I have a cabin that i initailly had the old round dish and standard reciever. Just upgraded all recievers to HD. I aquired a slimline dish that has 4 lines( so I think its not a SWM?) The SWM is the one with the single line and the power inserter correct? Do I need a power inserter to get these new HD recievers to work? Do I need a multi switch I have an old on that was with the slimline. can I use that? If I just hook up 1 reciever in my cabon can i run just 1 line from dish to reciever ?