In Exchange 2003, how do I force the Global Address List to update?

Log-into the Front End or Back End.

Open System Manager in Exchange.

Expand Recipients.

Click on Offline Address List.

Right click on Default Offline Address List and click on Rebuild. At prompt click OK.

If you are using Exchange Cached Mode: you can download the new GAL (Outlook – Send/Receive – small black triangle – Download Address Book)