I’m building out a Windows SharePoint Services 3.0 (SharePoint 2007) site for my client. The site uses two different methods of authentication, one for intranet users and one for extranet users. The intranet users will be logging onto their workstations using their corporate domain based username and password. We have one Url in SharePoint for these users, which is set to the out of the box Windows authentication. When the user goes to this Url, IE6 is set to send the credentials to the site, so ......