[snip] My application is only used within my company. I want to pull the NT Authenticated user that is logged in, cross reference that user with what I have pulled from ldap and verify the user's name is valid. If the username is valid I will assign it to a variable and use that variable to store the name of the user that submitted the requests. Yes, I am trying to get a single sign on method if possible. [/snip] This is one of those holy grail questions asked before several times here. In order to pull this off the computer would have to know who you are after you have logged on. ASP has Request.Servervariables("LOGON_USER") and requires that the web server (IIS) be set up properly.... if IIS is set to use Basic Authentication or Windows Authentication then LOGON_USER is populated. So this is not possible using PHP (server-side). Perhaps JavaScript? Not really. Hours of searching the web will reveal that this is not probable. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php