Who Says You Can't Use Microsoft Word To Do XML?
http://www.writingassist.com/articles/xml-authoring-msword.htm

Abel, Scott
Writing Assistance
2006

Abstract:

Although MS Word can generate XML, it should not be considered any kind of a robust XML authoring tool. Instead, its XML features are best for use with other Microsoft Office applications. However, because XML authoring is gaining in popularity, new XML authoring software tools and utilities are coming to market. In this article, Scott Abel looks at using MS Word for XML and takes a closer look at one alternative XML solution from a Microsoft partner that uses Word's familiar interface.