I am trying to accomplish mod_ldap to another LDAP server that is not
eDirectory on OES2SP2/SLES10SP3.
How do I get this to work on OES2SP2?

This does not work it is not even an available option.
At the Apache server machine, log in to YaST.
Click Network Services > HTTP Server > Server Modules.
Scroll down, then enable the ldap and authnz_ldap modules.
Click Finish.
In a text editor, open the /etc/apache2/httpd.conf file.
Add the following section to the end of the file:

<Directory "/srv/www/htdocs/sales">
Options Indexes FollowSymLinks
AllowOverride None
order allow,deny
allow from all
AuthType Basic
AuthName Internal
AuthBasicAuthoritative off
AuthBasicProvider ldap
AuthzLDAPAuthoritative off
AuthLDAPURL ldap://another-ldap-server-non-eDirectory
require valid-user

Invalid command 'AuthzLDAPAuthoritative', perhaps misspelled or defined
by a module not included in the server configuration