Hi I am a new member to this forum and I was wondering what is the best way (and cheapest)..to add a receiver to my system..i have been a customer of dish network for over a year and a half..have a DVR unit in the living room..and a regular unit in the master bedroom.. i want to add a 3rd receiver to the other bedroom.. at the installation the guy put a QUAD LNB on the dish...he said it could add up to 2 more receivers later then...one more question if i buy a receiver from a online place that sells used ones what is the purpose of the smart cards? my units dont have them. also what does it mean when they say No Balance about the unit,,,,if i add this 3rd unit i just call to activate it and pay my 5 bucks or so a month for it?? thanks for any help Bill