- ADC (Active Directory Connector) to create ‘Agreements’ between Exchange 5.5 and Active Directory.
- ADMT (Active Directory Migration Tool)
- Server Migration Wizard
- Move Mailbox Wizard
- CSVDE and LDIFDE for bulk imports of user accounts
- ADSI (for troubleshooting)
Whether or not you hire a consultant, try and get an ‘away day’ to a non competitor who has actually done the Exchange 2000 migration.