Newbie Question about Apache config !

Hi,

On a redhat linux based system i've installed Apache 1.3.26 with PHP
support and it works well.

I have a little problem with a thing :

If i call my server by a link like http://<server name or IP> it works.

But when i want to browse a sub directory a link like http://<server
name or IP>/<Directory name> dosen't work.

In order to display my index page i have to add a "/" at the end of the
link : http://<server name or IP>/<Directory name>/

Which directive i have to set in order to display the index page of a
directory with the 2 ways :

http://<server name or IP>/<Directory name>
and
http://<server name or IP>/<Directory name>/

Thanks a lot for your replies !

David, France