how to populate custom attributes

At office we are running a Server with AD and several workstations. Now due to some reasons we need to add some extra information in the AD such as employment number, office stop number, etc for each user. We will also use those pre-defined custom attributes (1-15). HR will provide the information. How can I import them properly?

I think this can be done by adding user CN to each attributes then use LDAP, am I right? Also I would like to know if it is possible how can I use this process to update other attributes such as office address? Please help.

First of all I’ll say there are several ways of doing the same in AD. You can make use of LDIFDE, VBScript, PowerShell, NET, etc. But that depends on how is that information stored? Is there a CSV list or Excel list you can use?

I found this tool, Bulk AD Users at http://www.wisesoft.co.uk/. Very good and free. I tested the export function. Will test import with update using csv.