From Apple:
If you have a Bluetooth-enabled Mac, you can use iSync to wirelessly synchronize the Address Book and iCal information on your computer with the contact, calendar, and To Do information on your iSync-compatible Bluetooth mobile phone.
1. Before you can sync your phone and computer, you need to add your phone to iSync. You only need to do this once.
Make sure your phone is in discoverable mode. For more information, see the information that came with your mobile phone.
2. Make sure you have a Bluetooth USB adapter connected to the computer you want to sync your phone with, or that your computer is Bluetooth-enabled.
For information on connecting a Bluetooth USB adapter, see the instructions that came with your Bluetooth USB adapter.
For information about Bluetooth, visit
http://www.apple.com/bluetooth.
I hope this helps you. I am not sure if your powerBook has bluetooth.
