For technical informations about the Volume Shadow Copy Service, you have to select the most appropriate TechNet Forum according to the operating system you're working on. You can find more informations (from a developer's point of view) about the VSS Service
at the following address
http://msdn.microsoft.com/en-us/library/windows/desktop/aa384649(v=vs.85).aspx
You can post your question in the .NET Development Forums at the following address
http://social.msdn.microsoft.com/Forums/en-us/category/netdevelopment.
or select a specific Forum related to the programming language you want to use.
Bye.
Luigi Bruno - Microsoft Community Contributor 2011 Award