How to Upgrade the Exchange 2000 Active Directory Connector
Before you can upgrade a server running Exchange 2000 Active Directory Connector to Exchange Server 2003, you must first upgrade the Exchange 2000 version of Active Directory Connector to Exchange Server 2003.
Procedure
To upgrade an Exchange 2000 Active Directory Connector
On the server running the Exchange 2000 Active Directory Connector, click Start, click Run, and then type E:\adc\i386\setup.exe, where E is your CD-ROM drive.
On the Welcome to the Active Directory Connector Installation Wizard page, click Next.
On the Previous Installation Detected page, click Reinstall to upgrade your Exchange 2000 ADC to the Exchange 2003 ADC.
The Previous Installation Detected page
On the Completing the Active Directory Connector Installation Wizard page, click Finish.