Latest MS Office Stuff from Microsoft:

Smart Tags: Realize the Potential of Office 2003 by Creating Smart Tags in Managed Code Learn how to build and deploy managed smart tags, and how they work with Microsoft Office Smart Tag List XML schema, advanced managed smart tags for Office 2003, and Office XP.

Office 2003 Smart Document Software Development Kit (SDK) This download provides the software development kit (SDK) for creating smart documents with the Microsoft Office System (1/14/2005)

Installing and Using the Office 2003 Primary Interop Assemblies Find out how to get, install, and use the primary interop assemblies (PIAs) available for Office 2003.

Excel: Integrate Far-Flung Data into Your Spreadsheets with the Help of Web Services Make the most of the data returned from your Web services with the Office 2003 Web Services Toolkit API and take advantage of the latest capabilities to customize list views, graphs, and charts.