Changing channels. I have a Home Theater PC (HTPC) based system where the video is centrally captured, timeshifted, commercial skipped, and stored, then is distributed to the various viewing locations; i.e. my HDTV, MBR, playroom, lab, etc. I do it now with Cox cable and the Moto STBs. Using serial is the preffered method (or Firewire), and using IR blasters is an inferior method, not one worth considering at all. But I want to change to D* for my 'TV' broadcast service provider.