Chem4Word addin makes it easier for students, chemists and researchers to insert and modify chemical information, such as labels, formulas and 2-D depictions, from within Microsoft Office Word.
Currently this addin is applicable for Word 2007 and above versions.
It uses Chemical Markup Language which is XML for chemistry. Good to see periodic tables appearing in Word documents.
Beta version of the product is currently available at http://chem4word.codeplex.com/
Demo - http://research.microsoft.com/en-us/downloads/3fe31020-0e51-4ee0-ada3-5cd142bcf930/default.aspx