I have to migrate four units in to one. Each of the unit is currently running their own windows 2000 domain with exchange 2000. I have Windows 2000 domain created and exchange 2000 running for the new combined unit. How do migrate users from each of the old domain and also import their exchange mailboxes to the new windows 2000 domain? Thank you soo much for your help. PLEASE let me know cuz this is driving me crazy.