Missing "E-mail Addresses" tab in Active Directory Users & C

[Eric]

I'm migrating Exchange 5.5 to Exchange 2003 in a Windows 2000 AD domain.
I'm trying to add an additional e-mail address to an account and according
to the help, I should have an "E-mail Addresses" tab for the Properties of
my user in Active Directory Users and Computers. This tab does not exist.
Does anyone have any ideas?

[Rui J.M. Silva]

You must run AD Users and Computers in a computer where you installed Exchange System Manager, in order for that tab to appear.

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[Eric]

That did it!
I didn't even think to try that since my Exchange server isn't a DC. Thank you for your help!

-Eric