http://blogs.msdn.com/jimgries/archive/2008/02/20/need-to-write-a-new-debugging-engine-for-your-favorite-platform.aspxJackson , recently posted a new sample for how to write a Visual Studio debug engine . As Joc put it: "in our architecture, the debug engine is the part that does all of the communication with the debugging/diagnostic APIs for a given platform, and communicatesen-USCommunityServer 2.1 SP1 (Build: 61025.2)