Hacking a GC Controller

[Aldante_Fax]

I'm a newbie at making an arcade control console but I'm willing to try it out to make a decent stick for playing Soul Calibur II on GameCube, but I'm not sure of the PCB layout on a GameCube controllers and at the current moment I don't have the money to cannibalize one. Can someone tell me how to do it/show the wiring to create an arcade board that uses a serial port to send data (to use X-arcade converters and make the controls compatible with PC and GameCube)? Any/all help and input appreciated.