Download this reference and start developing solutions based on the XML schemas used in Outlook 2010.
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Outlook 2010 XML Schema Reference
Outlook 2010 XML Schema Reference
Visual Studio 2010 Shell (Isolated)
The Visual Studio 2010 Shell (Isolated) Beta 1 Redistributable Package contains the runtime binaries that are required to deploy an application that is based on the Visual Studio 2010 Shell (Isolated).
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Visual Studio 2010 Shell (Isolated)