Visual Studio Help is available in two versions, Visual Studio Help 2008 and 2010, which are also known as MS Help 2.0 and MS Help 3.0, respectively. Originally, each of these help formats was announced as the upcoming the successor to HTML Help. However, in both cases Microsoft then backpedaled and it now seems clear that they are not going to be released as help formats for normal user applications.
The two Visual Studio Help formats are only relevant for documenting programming components within the Visual Studio .NET environment. If this does not apply to you please don't worry about this help format. It cannot be used for any other purpose.
Please refer to the special Visual Studio Help chapter in the More Advanced Procedures section for details on working with Visual Studio Help in Help+Manual.
Visual Studio Help (Advanced Procedures)
Visual Studio Help (Configuration Options)
Visual Studio Help (Reference)