http://adisfun.blogspot.com/2009/05/add-employee-id-field-aduc.html
http://pberblog.com/post/2009/06/21/Add-extra-columns-to-Active-Directory-Users-and-Computers-display.aspx
http://msexchangegeek.com/2010/05/06/how-to-add-employee-numbers-in-aduc-and-exchange-gal/
Richard Mueller edited Revision 10. Comment: Changed AD tag to AD DS
Great Patris
Thanks for including my blog. As 2008 R2 and Windows 8 become more common and ADAC is used more then people will not need this as much but for now it is still a very popular entry on my blog.
Thanks
Mike
Thanks Biswajit
Thanks Mike & Patris :)