This is copied and modified from my response to a similar question in the "Let us entertain you" forum.
First, you can keep the coaxial connection for FM reception if your satellite receiver has "RF in" and "RF out" connections.
The outside coax connector labeled cable/satellite accepts either cable or satellite feeds. There is a short jumper cable inside the cabinet under the TV (in the 2955, not sure where it is in the 3400). Leave the jumper cable in place when you are using the rooftop antenna, and engage the booster button for the antenna in the bedroom closet. When you are using cable TV, again leave the jumper cable in place, but disengage the booster button (the green pilot light will go off). Finally when you are using a satellite dish, disengage the booster button and remove the short jumper cable. Some owners have discovered that the wiring is not consistent, but one of the connections to which the jumper was attached should be connected to the "satellite in" connection on your satellite receiver; the other should be connected to the "out to TV," or "RF out" on the receiver. That will provide a signal to both televisions.
If you wish to get more complex, you can use an A/B switch on the "satellite in" cable. One cable from the switch would go to the "satellite in" connection on the receiver. The other would go to the "RF in" connection on the same satellite receiver. Switching between A and B would allow you to view campground cable or your own satellite dish, respectively. Also, when the cable position on the switch is selected, this completes the circuit that the short loop connection provides. You don't need to replace that short piece when viewing cable or antenna.
If you wish to pull the TV from the living room cabinet (it's screwed into place with wood screws through its plastic chassis), you can run an s-video connection between the satellite receiver and the TV. It's difficult job, but worthwhile if you get around to replacing the Qwest system with a better receiver and DVD player. Might as well replace the speakers while you're at it...
Bill and Mariana McCamy
'05 F-250 Lariat 6L PSD
'05 2955RL
Woodland, CA