I feel really stupid asking this, but here goes: I have 2 HD-DVRs, 1 HD and 1 standard receiver. I want to move the HD receiver to a different room where there is a coax cable but DTV wasn't installed into that room. In my attic I find the 6x8 multiswitch with 6 lines going out. It's hard for me to trace where the cables are going to after they leave the multiswitch: it's just a group of cables that go into the wall. I know I can just unplug each cable until I find which one I need to disconnect, but I can't find the cable that's going to the new room. Shouldn't there be an unconnected cable in this mess that leads to the new room?