Installing Visual Studio Tools for Applications
Visual Studio Tools for Applications installation works best if you have installed the Microsoft .NET Framework and Visual Studio first.
For system requirements, see System Requirements for the Visual Studio Tools for Applications IDE.
If you install Visual Studio 2008 and the MSDN library first, the Visual Studio Tools for Applications documentation integrates into the MSDN library table of contents.
Installation Steps
To install Visual Studio Tools for Applications
Install the Microsoft .NET Framework 3.5 Service Pack 1 from the Microsoft Download Center: Microsoft .NET Framework 3.5 Service Pack 1.
Install the Visual C++ 2008 Redistributable from the Microsoft Download Center: Microsoft Visual C++ 2008 Redistributable Package (x86).
If you have Visual Studio 2008 already installed, install Service Pack 1 from the Microsoft Download Center: Visual Studio 2008 Service Pack 1.
Download and install the VSTA SDK from the Summit Software Web site: Visual Studio Tools for Applications Software Development Kit (SDK).
See Also
Concepts
Introduction to Visual Studio Tools for Applications
Overview of Integrating Visual Studio Tools for Applications
System Requirements for the Visual Studio Tools for Applications IDE
Securing and Deploying Add-Ins