Windows authentication and Anonymous authentication - Solution

Hello,
I'm looking for a way to automatically capture the username for intranet users, while still redirecting other users (non-domain users) to a custom logon screen for username and password.
I found this article: http://msdn.microsoft.com/en-us/library/ms972958.aspx
But i'm using Windows Server 2008 R2. So the "right-click the WinLogin.aspx file, click Properties," section doesnt work... cause there is no properties open when right clicked!  Please help!