How to configure Exchange Server 2003 so that users can log on to OWA without entering a domain name
http://support.microsoft.com/default.aspx?scid=kb;en-us;903942
How to create a rule to enable automatic replies to users who post messages to a public folder in Outlook 2003
http://support.microsoft.com/default.aspx?scid=kb;en-us;903289