When logging into Exchange 2003 OWA it comes up with a username and password box rather than the exchange OWA webpage

Q. How can I force my Microsoft Outlook 2007 client to a particular autodiscovery server?   A. By default, Outlook 2007 clients try to discover their configuration automatically by searching for various DNS records based on the user’s email address. However, you can use an XML file to force Outlook to a particular address for a ...