Required Installation Steps for Development Computers
Before you can develop and debug Microsoft Office solutions, you must install the .NET Framework, Microsoft Office and service packs, the Office primary interop assemblies, and Visual Basic for Applications (VBA). For details about the installation steps, see How to: Install Visual Studio Tools for Office to Develop for the 2007 Microsoft Office System and How to: Install Visual Studio Tools for Office to Develop for Microsoft Office 2003.
The Microsoft Office primary interop assemblies must be installed into the global assembly cache (GAC) and registered before you can create or run a Visual Studio Tools for Office solution. You can then write managed code to interact with a Microsoft Office application's COM-based object model. For more information, see How to: Install Office Primary Interop Assemblies.
If you plan to create workflow solutions for Microsoft Office SharePoint Server, you must develop on a computer that has Microsoft Office SharePoint Server 2007 installed. For more information, see How to: Install Visual Studio Tools for Office to Develop for SharePoint Workflow Project Templates.
Visual Studio Tools for Office does not support installing Microsoft Office 2003 and the 2007 Microsoft Office system (or different versions of the same application, such as Word 2003 and Word 2007) side-by-side on the development computer. To develop solutions for different versions of Microsoft Office, use a different development computer for each version of Microsoft Office.