apache module problem

["syed mehdi" <smmehadi@xxxxxxxxx>]

Hi Guys,
I installed latest version of apache (2.2.8) on FC8 (fedora core). i want to authenticate a script before any user can execute it.
for this effect i made changes in httpd.conf (placed at "/usr/local/apache2/conf/httpd.conf") and added lines as:

<Directory "/usr/local/apache2/cgi-bin/authenticate">
   AllowOverride AuthConfig
</Directory>

in folder /usr/local/apache2/cgi-bin/authenticate, i created .htaccess and added following lines in it:

AuthType Basic
AuthName 'LDAP Login (Please do not add prefix before username)'
AuthLDAPUrl ldap://machine-ip:389/ou=people,o=xyz.com?uid?sub?(objectClass=*)
<Files "authenticate.py">
        require valid-user
</Files>

now whenever i am trying to execute authenticate.py (placed at /usr/local/apache2/cgi-bin/authenticate)
i am getting the error as:
[Fri May 16 16:32:28 2008] [alert] [client ip] /usr/local/apache2/cgi-bin/authenticate/.htaccess: Invalid command 'AuthLDAPUrl', perhaps misspelled or defined by a module not included in the server configuration

Please help

Thanks & regards
Syed