First I need to get a Dock, I have to keep mine intact as I use it daily with my demos and android integration services. If you want yours modded for free let me know. I will guarantee you will get yours back either in the condition it was sent or working with the MOD.
For the modders following along, assumed steps.
1. Remove feet from bottom of dock. Guessing assembly screws are there.
2. Disassemble dock and look for space somewhere along the edge to add a small barrel adapter.
3. Find power leads to the battery and solder extension wires.
4. Test that extension takes charge and that factory connector still works to charge
5. Fabricate bracket for connector
6. Drill edge of case to expose connector.
Let's hope it is this simple. =]