roadkill420:
now this is how you would normally set these up if you have the transmitter that the module fits into in the instalation process but I dont have the transmitter this is where I want the arduino to come in and replace the transmitter
I don't have the faintest idea how to do that and there is not nearly enough technical information in the PDF you provided.
For all I know the interface between the tX module and the transmitter is a trade secret.
...R