W124-E200 Diesel Infrared remote control
 

My Benz W124-E200 Diesel (12/1994) imported from Germany have a original IR remote control and a immob. system (driver handle with led's) and I wont to change it to a RF remote control.
The vacuum pump is a Bosch with a 8 pins square connector (0 132 006 331), the IR receiver module(202 820 44 26) and the Convenience Control Module (202 820 10 26) - 2FH+SHD.
I have only one IR key and thats the raison wy I will chanche this system.
On Ebay-Germany are many IR key's to buy but I dont now that I can programming this !
How I can fix this ?