LD37, I'm NOT pulling your leg or anything.
I don't frequent this BBS anymore because My E-pod died.
OK, all keyboards work about the same way, take all the key presses and then shove them through a serial, PS2, or USB connection.
When you press down on a key on the keyboard what you are actually doing is completing a circuit to the keyboard controller. Then the controller registers a key press and sends it to the computer.
Now here's where the fun begins.
The USB keyboard and the stowaway are mapped differently.
Example hitting the "F" key on the usb keyboard completes the circuit to pins 1 and 2, but hitting "F" on the stowaway completes the circuit to pins 4 and 6.
So what you have to do is map what pins a key press activates on the USB keyboard and then what pins it activates on the stowaway. And just rewire it.
That is the hard wired way.
Option 2 (haven't tried this)
The stowaway keyboard outputs all keystrokes to the serial connector. You can wire a serial connector to the E-pod and then get the developer's kit from think outside and try to write your own driver.
I would put some pics of the procedure but my access to a digital camera is limited 
I mod anything I can get my hands on!