How do I make the Datebook button bring up DateBk5 instead of the regular Datebook application?
A dialog appears when you first run DateBk5 (or whenever it has to rebuild the preference database) asking you if you want DateBk5 to be the default datebook application and run when you tap the Datebook button. If you responded NO to that question initially, then as noted in the alert, you can simply go into the PREFS application (main screen with all the icons, tap on PREFS), tap on the popup list at top right to select BUTTONS and then select DateBk5 in the popup list next to the datebook button. This is a standard Palm OS function that allows you to have any button run any application (see also note, however, about DateBk5 using these buttons to open up split-screens).
