After your computer and your Palm OS device are communicating, select the conduits you want under the Pilot Conduits section of the Control Center. You can use conduits to synchronize data with several applications; the Evolution conduits are labeled EAddress, for the contacts in your address book; ECalendar, for your calendar; and ETodo, for your task list.
Click Enable, then click Settings to change what the conduit does when activated. Your options can vary depending on the conduit, but typically they are as follows:
Synchronize: Copy new data from the computer to the handheld, and from the handheld to the computer. Remove items that were on both systems but have been deleted on one.
Copy From Pilot: If there is any new data on the handheld device, copy it to the computer.
Copy To Pilot: Copy new data from the computer to the handheld.
Select the behavior you want for each conduit you choose to use. If you're not sure, use Synchronize.