http://blogs.technet.com/keithcombs/archive/2008/04/05/windows-active-directory-ad-inside-out-11-part-series.aspxLike the Group Policy series links I just posted, there are some core concepts with Active Directory that are timeless as well.  We are updating the content to include changes to AD since the release of Windows Server 2008.  Until then, hereen-USCommunityServer 2.1 SP1 (Build: 61025.2)