Here’s an MSDN blog post which enumerates the MIME types for Office Applications, and in particular the Office 2007 Open XML formats. These are needed for correct delivery of these files via a web server.
Took a little searching to find it, so I thought I’d share. 🙂
http://blogs.msdn.com/vsofficedeveloper/pages/Office-2007-Open-XML-MIME-Types.aspx
