Is there an easy way to configure LDAP?

[Forrest Dickinson <fdickinson@morganhunter.com>]

I am trying to configure an OpenLDAP server to handle authentication for

my companies network I have read the Howto's and the man pages and still

can not seem to get it to work.  Although I have been able to get it to
work as an address book.  Is there a gui LDAP administrator similar to
the Novell NDS administrator out there.  I am trying to convert my some
of my companies servers from NT 4.0 to Linux so I would really like to
get this working (I do not want to have to manage 6 separate sets of
user accounts on 6 different servers).  I have the pam LDAP modules
installed as well.
Also if OpenLDAP is not "there yet" in functionality would NIS be a
better and easier to setup and administer alternative?  Unfortunately I
do not know much about NIS either.

I am currently running Redhat 6.1, Mandrake 7.1, and Caldera 2.4.  I
have not decided which distribution I like the best, but I am assuming
LDAP or NIS setup would be about the same with any distribution.