On Codeplex (a great source of useful projects for all sorts of development things) there is a project called DocX. 

To quote the author, Cathal Coffey, "DocX is a .NET library which allows developers to manipulate Word 2007 files in an easy and intuitive manner."  He goes on to say "It does not use COM libraries nor does it require Office to be installed" and does not rely on the Open XML SDK

Check it out at http://docx.codeplex.com