I have an existing all MS box (NT server, IIS, MSSQL, SiteServer, Exchange - I know - it's inherited) that I've finally convinced the powers that be to put PHP on. Problem is, until I can do a complete re-do of the site, I need to be able to pull the Username/Login out of an existing IIS session into my PHP pages to query the Exchange server via LDAP. I believe the person who set up this monster is using session variables but don't know how to get at them from php. Any help would be greatly appreciated - thanks.