Thanks for the info. Just went out and bought a Tcl book and plan on playing with OpenACS. It's been a while since I've done shell-like programming, but the conciseness of the conversion code (using wvWare and tidy) is a nice contrast with the PHP and C++ programming I've done more recently.
If the suggested conversion routines work well for the new Word formats, I'll go that route. If not, I'll take a look at OpenOffice and how to graft their work into a general conversion utility. (or the TOM project)
Regards.