So I had my basic idea down. iPhone joins the Linksys router network. It gets an IP address. Then, I open up my pilot program. The pilot program interfaces with the router via SSH (I couldn't think of a better way that has redundancy, and speed, and was already buily by someone else). The pilot program interprets what the iphone is doing, and outputs data to one of the ethernet ports of which there are conveniently 4. Rudder, Ailerons, Throttle, Elevator.
The program itself wasnt too hard to make using Xdev, the iPhone/OS X development suite. The interface was pretty easy, but there was a lot of code behind tapping all the accelerometers at once. To further complicate things, how I tilt the phone may be different from how someone else tilts it.
You can read a much more detailed explanation of Joshua's program by clicking the link below. Also take a look at the video to see the app in action.