As we all know by now that the Office 2007 products use the "Office Open XML Format" as the default format for the files' content. The following resources would be handy if you ever need to create/manipulate the Office 2007 files in Visual Studio.

Open XML Format SDK

The SDK contains the documentation and the classes for creating/maintaining the Open XML files.

2007 Office System Sample: Open XML File Format Code Snippets for Visual Studio 2005

The name says it all!

2007 Office System Document: Open XML Developer Map

The poster that contains the visual schemas for the Word documents, the Excel spread sheets, and the Power Point presentations.

2007 Office System: XML Schema Reference

The reference documentation for the 2007 Office System XML schemas.

Open XML Developer

Read/learn about the Open XML Formats.

XML in Office Developer Portal

The following articles are a great resource for learning about how to manipulate the Open XML files using code.

Building Server-Side Document Generation Solutions Using the Open XML Object Model (Part 1 of 2)

Building Server-Side Document Generation Solutions Using the Open XML Object Model (Part 2 of 2)

Manipulating Word 2007 Files with the Open XML Object Model (Part 1 of 3)

Manipulating Word 2007 Files with the Open XML Object Model (Part 2 of 3)

Manipulating Word 2007 Files with the Open XML Object Model (Part 3 of 3)

Manipulating Excel 2007 and PowerPoint 2007 Files with the Open XML Object Model (Part 1 of 2)

Manipulating Excel 2007 and PowerPoint 2007 Files with the Open XML Object Model (Part 2 of 2)