I use a free program called GSAK that helps me organize my Caches and also use the Explorist 500. I go to the geocaching.com website and "Build a Pocket Query" and have that emailed to me, then save the file into the GSAK program, open a database named whatever I want to call it, save those files into that database and then click on the GPS button (after setting up and letting it know I am using a Magellan Explorist 500) and click send waypoints while the SD card is plugged into my laptop. Then I am ready to go.