Articles on New MS Office Technologies:

Using the XML Features of the Excel 2003 Object Model Explore the XML-related objects, methods, and properties in Excel 2003.
Using an ADO.NET DataSet as a Reporting Services Data Source How to build a data processing extension for Reporting Services using an ADO.NET DataSet as a data source.
Data Points: Handling Data Concurrency Using ADO.NET How to handle data concurrency violations in ADO.NET.