Is the connector on the GPS antenna a standard SMA connector. I thought about using this: http://www.amazon.com/Hawking-RP-SMA-TO-RJ-SMA-HAC7SS/dp/B0000DIESO/ref=sr_1_3?ie=UTF8&qid=1310062648&sr=8-3

I do not have any idea if it is "standard SMA", but I can help you by providing a few pics of the connector:

The SMA wifi extension cable did not work. The gender of the pin is opposite one the GPS antenna. Really screwy. The threaded end has a pin on one and hole on the other. Same for the nut end. I don't know of a solution now.

SMA is a very commonly used antenna connection in Amateur Radio. There are are a bunch of adapters here:

http://www.universal-radio.com/catalog/parts/smadapt.html