I have very little knowledge about this subject and am in need of much help! I have had DirecTV for about a year. I started out with four standard receivers. About two months ago, I got a new HDTV and called DirecTV out to put a new standard HD box in to replace one of the standard boxes. They came out and put a 5 LNB slimline dish on my roof and set up the box and it has been working fine. Yesterday, I acquired a HR20 HD DVR to replace the standard hd box I have. I hook it up using the cables that were there from the previous hd box and then realize that I only have one cable and I need two for the dual tuners. I call DirecTV and the only help that they will give me is that they can send a technician out to my house in mid April. I then do some research online of other people that have had this problem and find out about the multi switch. I then figure that I could find the multi switch and just run another cable from that to the other tuner. I locate the multi switch (its a 3x4) and see that this is only being used for the standard receivers in the house. I then notice that there is a separate cable coming from the dish directly to the back of the hd receiver. My question is, what do I need to do to get the dual tuners on the HR20 working. Any help would be greatly appreciated