Converting a Word document to LaTeX format

Solution 1:

This is the first result from google and seems to offer the features you want:

http://www.grindeq.com/

Solution 2:

Late to this party but have you tried looking at the stackoverflow question? If you are a complete newbie to latex it looks like wordtolatex and gaussnewton seem best choices.

Solution 3:

I don't know about equations, but there are several rtf to LaTeX converters that should also handle the graphs.
Be aware that LaTeX has a pretty steep learning curve, especially if you want to control the layout as much as you need to for a book. Its great once you have the knowledge, but it may be a struggle to get there. Does your publisher really expect you to do all of the layout? I thought that most of them did the layout themselves using some fairly expensive software packages.