How do I... Modify Word documents using C#?
Accessing Word components from C# isn't quite as straight-forward as many other features of C# and the .NET Framework. With that said -- it's not rocket science either. You simply need to know what to reference and how to use the components. Zach Smith lays out exactly what you need to do.
This download is also available as an entry in the TechRepublic How do I... blog.