My boards are laid out completely differently compared to the OLRS, I did not used his code at all, but wrote my own code using the arduino RF22 library instead. I have attached my schematics. Flytron's code will not will on mine without significant modifications, and vice versa. My atmega328 runs at 5V, and the RF22 runs at 3.3V from a SMD regulator on the back of the board, the 5V SPI commands from arduino are sent to the module after going through a voltage divider. My boards are a little to big, I'm planning to make them smaller the next time.
I can send you a couple of the boards free if you pay for the postage, but please understand that I don't really want to start a business selling boards!
RF22 RC Board - Rev3.pdf (68.5 KB)