http://blogs.msdn.com/b/innov8showcase/archive/2010/01/29/using-open-xml-sdk-2-0-to-create-office-solutions-on-windows-7.aspxWith Open XML SDK 2.0, it becomes much easier to create Microsoft Office (2007 and 2010) based solutions with managed code than to work with VSTO (Office runtime for Visual Studio through interop) directly. The December 2009 Community Technical Previewen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)