How to sync ACT 2005+ activity types to the PDA
From CompanionLink Support
By default, ToDos and Opportunities from ACT will sync to the Task list of the handheld. All other activities will sync to the Calendar.
You can change this in CompanionLink Setup's Advanced Settings, on the Activity Mapping tab. For each activity type, you can choose "Sync to Calendar", "Sync to Tasks", or "Do not sync".