Hi, 

I have an IR receiver /repeater build that detect IR signal, and send it by wire to a photodiode. 
Istead of using a photodiode I wont to send the code through 220V AC wire, and build some PIC based receivers, in order to respond to specific codes to turn on/off lights like systems using X10.

Dose anybody can help me on this, with a schema or so, to interface to 220V and send / receave a signal  ?

Many thanks, 

Alberto Costa
Portugal
E:Mail: alberto_costa@edinfor.pt