no, I do not think it is possible to send infrared codes using the regular x10 protocol. x10 is very slow,it takes almost a second just to send a few bytes to turn on and off a light switch, and an infrared code can be quite long. So to my knowledge the standard X10 protocol is not used for anything other than turning on and off for dimming devices. there may be other power line or wireless infrared but I'm not aware of them. We are right now working on a module for IRTrans and also Tira, both of which are low cost USB infrared receivers/transmitters. They do not have the same functionality, though, as the GC 100