This page converts an EasyGPS .loc file from geocaching.com to a .pdb file containing waypoints suitable for use with Cetus GPS. To use it, use the 'browse' button to find the .loc file on your own machine, enter a name for the Cetus waypoint database, and hit "send it..." Note that .loc files saved by EasyGPS will not work with this converter; it only works with the XML version you get from geocaching.com.
The result is a .zip file containing your .pdb file (this cuts down on my bandwidth usage, and makes sure that IE knows what to do with the file.) Just unzip using winzip or something better, and install.
To switch to the new waypoint list, go to the waypoint screen in Cetus and choose Waypoint/Select list from the menu.
Questions? Comments? Flames? Email me.