authorization imis integration

Dear All,
We have Synology DSM (Disk Station Manager) Installed in our office, and my Drupal 7 site is hosted on it, Now i want to use Directory Users to use Drupal with same credentials using LDAP.
I installed the ldap required modules but still having trouble configuring and connecting, is there anyone worked with ldap + Drupal ?
Need help.

If anyone is interested, I recently added a new sandbox project for a module that supports iMIS ISGweb integration: http://drupal.org/sandbox/natemow/1299302. Any and all feedback is welcome!

Also, please let me know if you have a test iMIS database and an active ISGweb license and may be interested in helping me host a demo of the module.

I'm working on a project that will use CAS as the authentication, but iMIS for authorization. I just wrote the ldap_authorization module for the ldap project. An imis authorization module would be very similar in architecture:

1. have a site admin define a set of rules for mapping a drupal user to an imis/ldap user and then an imis/ldap user to drupal roles, og groups ids, etc. In LDAP the rules are based on the ldap user entry attributes. In iMIS the mapping rules might include any number of imis attributes such as the GetParticipations webservice.

2. When a user authenticates,