Quite a lot of useful tips for setting up, maintaining, and improving the usefulness of WS2003.
http://www.visualwin.com/
The site is very easy to follow, includes screenshots in all the howtos and walks you through the processes quite easily. If you are setting up a Windows 2003 Server and looking to add Php support, ASP .NET IIS, etc... The visualwin site has tons of information you may find useful.
