There's a commercial Word -> TeX conversion tool which is quite good, Chikri Software's TeX2Word. The freeware rtf2latex works reasonably well though.
WYSIWYG is the wrong approach to take w/ TeX --- the LyX project's ``What You See Is What You Mean'' is much more appropriate:
http://www.lyx.org
People here may be interested in this though:
http://www.tei-c.org/Tools/Stylesheets/
(specifically the TEI to LaTeX stylesheet)
Sample documents made using (La)TeX:
http://www.tug.org/texshowcase/
(ob. discl. I have a few documents in there, most notably _The Book of Tea_)
William