Download Microsoft Visual Studio Tools for the Microsoft Office system (version 3.0 Runtime) (x86) from Official Microsoft Download Center

Microsoft Visual Studio Tools for the Microsoft Office system (version 3.0 Runtime) (x86)

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This download (VSTOR30.exe) installs the Visual Studio Tools for the Office system 3.0 Runtime, which is required to run VSTO solutions for the 2007 Microsoft Office system built using Microsoft Visual Studio 2008.