I am trying to help an elderly neighbor widow lower her expenses. She has both Time Warner cable and Dish now but would prefer only Dish to save money. She has a total of 7 HD displays in the home and I would like to distribute the output of a Dish 722 DVR to all. The unit will control via RF remotes but she only has RG6 wiring to all the sets, which works for the cable but the output from the 722 on coax is not HD? Is there a way to convert the HDMI or component outs to a coax connection signal that she can receive on her digital tuners in the sets? I have read about a modulator made by ZEE VEE Box but it is over $1000.00! And the labor to install HDMI cables to all locations from a HDMI splitter would be excessive and I don't know if it would work anyway as she has 4 different brands of TV? She is not techno savvy and wants something simple like her Dish 211s that just works. She only needs to watch oneprogram at any time as she is the pnly one in the house but would like to be able to record a second show, which the 722 will allow. Thanks.