A new Directory Server how-to is here!
Setting up a secondary CentOS Directory Server is a how-to describing how to install a second CentOS Directory Server and link it to a configuration/master Directory Server.  Just like it’s predecessor, this is a step-by-stop how-to that includes a sample session.
You can find the how-to at http://www.rainingpackets.com/wiki/doku.php?id=setting_up_a_secondary_centos_directory_server.