scrat's link is for exporting waypoints using older software...

Newer software use the following ...:

*Press Menu twice to get into the Main Menu System ...
*Cursor over to the Nav tab ...
*Cursor down to Waypoints Routes Tracks ...
*Cursor right to open Waypoint Management ...
*Cursor to highlight "Options" ...
*Cursor right to open options Menu ...
*Cursor to "Select All, and" ...
*Cursor right to open select Menu ...
*Cursor to "Export" ...
*Cursor right to select export ...
*Confirm Yes in green popup ...
*Wait for white popup (Nav data export successful) ...

Rickie