How to make a rc radio with arduino and a 2.4Ghz RX and TX module..??

This is the module which I am using..

That bigger box with an LED is the TX module and the small white one is the reciever..

On the tx there are three wires.. ORANGE RED and BROWN.

ORANGE --- PPM SIGNAL INPUT
RED --- +ev SUPPLY
BROWN --- GND

Now I want to program the arduino duemilanove to output PPM signals via one pin and feed it to the input of the tx module..

and have Throttle, Aileron, Elevator, Pitch and Aux 1 , Aux2 and etc connected to other pins..

This is the main thing what I am trying to do actually..

Please help me with this..

I posted about this on a forum a long time back there you can see I got a reply with a circuit which uses a PIC chip to expand the channels of a tx..

This expander circuit below uses PIC 12F615 which is not easily available. So can the same thing be done with an arduino..??