I am trying to develop a database using access where users on our intranet can make entries. However It would be nice to be able to validate their username against Active Directory before as they hit the submit button.

From a newbie

it's really just a case of setting up IIS so that "anonymous access" is not set. That should force IIS to look to AD.

then you can find out who the person is using Request.ServerVariables("LOGON_USER")