Tosh Meston mentioned this on his blog a while ago, but as OWA customization subjects seem to be very popular, here it is:
There are two relatively new TechNet articles out there that talk specifically about customizations of Exchange 2003 OWA in lots of detail:
Creating and Deploying Outlook Web Access Themes
Customizing the Outlook Web Access Logon Page
Have good OWA-moding!
Published Jul 05, 2005
Version 1.0
The_Exchange_Team
Microsoft
Microsoft
