I would suggest, if you already have not, to follow the tutorials here:
Follow the basic tutorials at the start in order to establish that your radio modules are wired correctly and can communicate with each other. If you are having problems with SimpleTx and SimpleRx, then run the CheckConnection sketch from post #30 of the tutorial and post the serial monitor output here.
Once you have confidence in your radio modules, you can then build on the tutorial examples to complete your project.