brownk,
Well the short answer is that the video sender/receiver pair will not work in this application. They are made for transmitting a composite video signal. [like the signal from your dss receiver to the tv]
Also, the dss cable carries a DC voltage to switch the polarity of the LNB on the dish, so I doubt that a wireless option even exists.
You may want to talk with some catv/dss specialists for other alternatives, but I think that your stuck with cables.
Good luck