While the geocache mode isn't listed on the main 60CSx description page, if you follow the Manuals link on that page you can download a copy of the Owner's Manual (it's a PDF document). If you read through that, you'll see the section about the geocaching-specific waypoint list on pgs 20-21, and the geocache setup screen on pg 72. (You'll also find the games that McKryton mentioned starting on pg 87.)
Thank you! I found all the info!