Step-by-Step: Migrating Exchange 2000 to Exchange 2003 Using New Hardware.
New MSExchange.org article…
Migrate your mail system from Exchange 2000 Server running
on a Windows 2000 Server system to a new server running Exchange Server
2003 on Windows Server 2003. This scenario will
take you through all Exchange-related issues from adding your first
Windows Server 2003 system to unplugging your old Exchange 2000 system
when finished.