I have successfully constructed an IR receiver to RS232 and controlled my XBMC box with that. I would like to place the HTPC out of site, and run the serial cable through the wall with the IR receiver placed under the wall mounted TV. I tried extending my wire (about 50 feet of CAT5 by the time I routed down through the basement and back up behind the TV) and did not get a signal. I assume this is due to the length of wire. Obviously I can get an IR repeater, but that seems inefficient. I would rather have a powered IR receiver that would push the RS232 signal through the wire to the serial port on the computer. Is there such a thing, or can I hack an IR repeater to act like this?