The GPS socket on the D7000 is not a miniUSB, wrong dimensions and contact arrangement, so you will have to find a connector. The easiest way to get a cable and plug is to get one of the cheap eBay passive remote switches and cut off the trigger switch assembly and wire a Micro USB plug(the S3 end) to the 3 wires in the remote cable, or chop off the far end of a Micro USB cable and use wire the free ends of the cannibalized remote cable and the shortened Micro USB cable.
How do you like your S3? I got one, my first smart phone, about 1 month ago and learn something cool about it every day. A great piece of technology. My friends with iPhones are envious. Stan St Petersburg Russia