Geocaching Live is the API published by Groundspeak for accessing
theur database via wevservices.
I now have a beta version of GeoScout which uses this API ready for
test and available from the download page or at
http://eastlands.dyndns.org/downloads/geoscout4.zip. You should NOT
overwrite your existing install or use your existing database. Please
see read-me in the zip for details.
Stuart