Kenneth,

Though we at the Scholarly Publishing Office at Michigan ( 
http://www.lib.umich.edu/spo/ ) use a DTD derived from TEI Lite for our 
publishing.  There are a few tools for converting and delivering TEI 
documents:

http://www.tei-c.org/wiki/index.php/Category:Tools

including some that will let you republish in the OPS 2.0 (".epub", from 
the IDPF) format:

http://www.threepress.org/about/

which is something publishers should be increasingly interested in:

http://toc.oreilly.com/2008/04/keep-your-eye-on-the-epub-ball-but-play-nice.html

However, if you're starting from scratch and encoding only contemporary 
literature, I recommend one of the following as your storage format:

* OPS 2.0
* DocBook
* NLM DTD
* OpenDocument (aka "ODF")

You'll find a more established base of tools for the sort of content 
workflows that a publisher, rather than a digital humanities project, is 
usually interested in.  Lots of links follow ...

DocBook to OPS 2.0:
* 
http://toc.oreilly.com/2008/06/open-source-docbook-xsl-experimental-epub-support-released.html

DocBook to lots of things:
* http://wiki.docbook.org/topic/DocBookXslStylesheets

Word to NLM DTD:
* http://www.microsoft.com/mscorp/tc/scholarly-publishing.mspx
* http://www.inera.com/IneraPressRelease08.03.07.pdf

On the viability of the NLM DTD:
* http://www.loc.gov/today/pr/2006/06-097.html

Tools for generating OpenDocument format
* http://api.openoffice.org/
* http://blog.reallysi.com/2007/02/competition_in_.html
* http://books.evc-cit.info/

Very cool tool:
* http://pkp.sfu.ca/lemon8

--Kevin
http://www.ultraslavonic.info/