Query regarding authorization through LDAP

[MANOJ KUMAR RANA <manoj.rana@tatainfotech.com>]

Hi list,

I have configured and installed openldap 2.0.7.6v, on caldera 3.1.

My query is:

Is it posible to configure LDAP such that, I allow selective access to
pages on my web server (apache_1.3.19), after ldap user authentication?
ie suppose user A authenticated, then he should be able to access only
html pages, and B user after authentication should be able to access only
txt pages, while some othe user has access to both of these types only. 
Note the server may contain files of more than these two types eg pdfs
etc.

Do I need to install modules other than mod_auth_ldap, mod_ssl for this?
Any pointer or information regarding this is more than welcome.

With thanks and regards,
Manoj Kumar Rana.