Windows Server 2003:
How to rebuild the SYSVOL tree and its content in a domain
Exchange Server 2003 Design and Architecture
Windows SharePoint Services Software Development Kit (SDK)
SharePoint Portal Server 2003: IntelliSense XML Files
Office 2003 Security Update: KB838905. This is the fix that has been in the press a lot lately, hurry to apply this one.
Visual Basic Express:
MSDN TV: Introducing Visual Basic Express, for the developers out there.