I have written a guided walkthrough for the new Debug Engine Sample available in VSIP. The walkthrough contains a high-level architecture description and a source code walkthrough of how the sample engnes launches debug processes. It demonstrates: launching the process and sending debug events. I plan on adding some more of these walkthroughs as I have time.

I also posted an update the sample itself to fix a setup issue and a race condtion. Version 1.1 supercedes the original verison.

 The walkthrough and the new sample release is available here:

http://code.msdn.microsoft.com/debugenginesample