http://www.daisy.org/project/save-as-daisy-microsoft/#main-content

Save as DAISY - Microsoft Word Add-In:

Microsoft Word Add-in Version 2.5.5.1 for Word 2003, 2007 and Word 2010 (December 2011) adds an option to Word to save a file in DAISY format.

32 bit version
64 bit version