Requirements Authoring Starter Kit (RASK) can help software development teams collect, interpret, distribute, and synchronize project requirements in a structured Word document using Microsoft Visual Studio 2005 Tools for the Microsoft Office System and the Microsoft Visual Studio 2005 Team Editions.

Download at Microsoft downloads - Requirements Authoring Starter Kit

Details on how to use this add-on can be found in this article: Using the Requirements Authoring Starter Kit - Part 1 and Part 2