From the dish I have two cables going to a grounding block and from there two cables going to a multiswitch. All 4 outputs have lines going in the house. Two to the DVR in the den, one going to a bedroom and the other going to another bedroom. The wife wants another DVR in the bedroom so I know I have to run another line to the bedroom to add the DVR. What multi switch would work and is it just a matter of hooking the cables from the grounding block to the input and then hooking the output cables to the output or does it need programming? I'm still new to the rewiring and installation stuff and any help would be appreciated.