SAP Portal + Single Sign On + NTLM + LDAP

Hi guys,

I am trying to get Drupal working seamlessly inside the SAP portal, meaning that users logged onto the domain will automatically be logged into Drupal.

I have managed to get Drupal working with LDAP using the "ldap_integration" module......with this the users are still presented with the Drupal logon screen but now they can type in thier network username + password and it authenticates against the LDAP. This is working 100% fine.

Now I need to move to the next stage and *try* get SEAMLESS integration meaning that if a valid user is logged onto the network and tries to access the Drupal website there will be NO LOGON section on Drupal and the LDAP authentication will happen automatically.

I have looked at the NTLM & LDAP authentication module (http://drupal.org/project/ldap_lookup) but it does not seem to be available in a stable version for Production use......

NOTE: Drupal is running under IIS.....I assume I would need to tick the "Integrated Windows Authentication" checkbox as well?

I would assume I would have to hide the logon screen somehow.....would I do that in the PHP code itself? Or is their config somewhere?

Any help in this regard would be greatly appreciated ;-)

Kind regards

Lynton