Hello I have a dvr and 2 standard receivers. I would like to add a second dvr (used) and keep the 2 standard receivers. The problem is that I am out of ports on my switch. My switch has 2 ports coming in and 4 going out. I am using all 4 for the 4 receivers I have. I looked at my dish and its an old oval dish with 1 LNB. There are 2 cables coming out of it and I assume there are only 2 ports on it. What do I have to add/change to make this work? Do I need a bigger LNB, a newer dish, a new switch? Thanks.