I know i can't do this in C#. That's why i downloaded Platform SDK.
First, as discussed this is not possible in .Net You have Windows SDK, try to locate functions which may help you in doing this and then you can call those functions from C# application. For intropability help you can use this website http://pinvoke.net I belive you'll find all the functions usage there. It has the usage of functions of all the common dlls in windows from managed application.