My main home theatre is located in my basement, with all the equipment centrally located upstairs, driving two theatre rooms. I just bought an RCA DTC100 to connect to my Mitsubishi WT46805. Obviously, I'd love to connect the Toslink output of the DTC100 to my Marantz receiver upstairs, but I'm at a loss on how to do it. Any suggestions?

The second questions is on how to connect my DTC100 to the Mitsu. The TV has a "Control" input, for use wih the old Mitsubishi HD receiver. Can this be used with the RCA DTC100? Will a standard VGA cable do it? Will the RCA then "take control" of switching the TV channels like the old Mitsu receiver does? Questions, questions, questions. TIA.