Newbie HELP!!! Ldap + MS Outlook / Express

[ldap@linuxpro.co.za]

Please could someone help ..
I'm batteling to grasp how ldap works and it's config.

And don't have time to reread the how to's.

Outlook express gives the following error.
"The specified Directory server could not be reached.
 The service may be temporarily unavalible or the name may be incorrect."

Slapd is running and as far as i can tell is listening on the default port??

Has anyone got a how-to that will work out the box for MS Outlook , so i
have some where to start that I know works ..

Many Thanks In advance
Gregory Machin