I am in the process of replacing one of my 2 508 dvr's with a 522. Will some one confirm for me that I have this thing right......Dish 500 dish with a proplus duel LNB...1 coax to a dpp separator into the 522.......run the 522 through it's set up and software download....call Dish and make it legal. Then attach the other 508 dvr and let it run through it's set up......is that it?