Many tech writers have had to convert Word documents into FrameMaker. It is a very unpleasant and painful process!
The good news is that Tech Knowledge offer a nice tutorial that explains how to convert documents as quickly and efficiently as possible.
“The infamous Word2Frame document describing tips and techniques for converting from Word to Frame or Frame to Word. At the end of the file is a Word 97 macro you can use (on a MIF) to change the first line of tables to a heading row.”
The site also offers a Web-based help system for FrameMaker.