RF transmitter and receiver circuit

guys can u help me make an rf transmitter and receiver circuit. i want to connect the receiver to the computer. i have no idea how to do this...
thank you

Start with a lot of reading !

can u give me a schematic of a transmitter and receiver using 55MHz rf signal?..

thnx...

For a wireless audio transmitter receiver circuit you can use a circuit that is based on a IR sensor like in this circuit **broken link removed** , you can use a RF transmitter receiver or you can use a FM transmitter for transmission module and a common radio for receiver module .