The 3 bent pins are your tip, ring, and sleeve pins. The other 6 pins grouped together near the back are the switched pins. Here's how I wired mine (click the pic for a larger image):
Switch Connections.png
Note: this view is looking at the bottom of the switch. The Battery connection goes to the positive terminal on the battery source; the VIN connection goes to the VIN pin on the voltage regulator. The way I have mine connected, the switch closes the connection between the battery and the VIN pin (i.e., turns the power on) when a cable is plugged into the jack.
For the curious, the schematic for the Kycon STX-3100-9C is located here.
Thanks again! I finally sat down and got it all together like you did. My soldering skills are severely lacking, but it works...for now...