View Additional User Information in AD Users and Computers.
How can I view additional information about a user in the AD Users and Computers snap-in?
The Windows 2003 Resource Kit has a hidden .dll file called Acctinfo.dll. After registering the .dll with the following command, it will add a new property page, called Additional Account Info, to the user properties page in Active Directory Users and Computers (or ADUC for short).
