Video Distribution System
You might check
www.channelplus.com and look at their SVM-24
It takes 4 input S Video Modulation and MTS and assigns each input to a different TV channel for distrubution through out the house.
I use one now.. with Sat dish receiver 1 input set to channel 21, Sat dish PVR set to channel 23, DVD set to channel 25, VCR set to channel 27.
any TV can then access, just by changing channel. (you need to have one channel in between to buffer the signal bleed)
It has the remote emitter ability also
you can also do a google search on Video Distribution
there's a group of companies out there.. depending on how highend you want to go (
www.Extron.com)
Good luck!