This link may be of some use to you:
http://www.glacialwanderer.com/hobbyrobotics/?p=291
You can use either receiver pin for data, but you need to do some noise filtering in hardware or software because these devices use simple amplitude modulation. If you are just interested in on/off control and not a serial data stream, you can pair the transmitter with a Holtek HT12E encoder and the receiver with an HT12D decoder. This will give you 8 bits of address and 4 bits of on/off control.