A user profile property cannot be mapped to an Active Directory directory services property. The data types are not compatible.
Do the following:
On the Site Settings page, in the User Profile, Audiences, and Personal Sites section, click Manage profile database.
On the Manage Profile Database page, in the User Profile Properties section, click Add profile property.
On the Add User Profile Property page, in the Property Settings section, type a name and display name for the property, and then select a type and length compatible with the Active Directory property.
For more information on user profile properties and Active Directory directory services, see the Microsoft Office SharePoint Portal Server 2003 Administrator’s Guide.