Rutson, Thank you very much for the link. It's exactly what I was looking for. I had the same problem as the OP and couldn't find a solution. I'd get within distance of the cache and start circling but couldn't get updated coordinates.
BTW, I'm using my Sprint PPC 6700, TomTom Nav 6 software for roads, Beeline GPS for caching, and TomTom Nav 6 bluetooth receiver.