Oops...nevermind..i just ran across the document that has the order.
Updating a Microsoft Exchange environment
Complete the tasks in the following order:
1. Update each Microsoft Windows Server® that is running Microsoft Exchange or the BlackBerry Enterprise Server.
2. Update the Microsoft Windows® clients.
3. Update BlackBerry devices.
4. Run the RIM Set Send As Permission tool.
5. Apply the most recent Collaboration Data Objects (CDO) to the BlackBerry Enterprise Server and the Microsoft Exchange Server.
6. Run a Microsoft calendar update tool (optional).