static extern TODO MDbg(TODO);

Declare Function MDbg Lib "kernel32.dll" (TODO) As TODO

The Managed Debugger (MDbg) sample has a great set of wrappers for the native debug API that deal with problems like these.

You can download Mdbg at http://www.microsoft.com/downloads/details.aspx?familyid=38449a42-6b7a-4e28-80ce-c55645ab1310&displaylang=en and get the wrappers there.

(or if that link gets broken, you can find the latest info at http://blogs.msdn.com/jmstall/archive/2005/11/08/mdbg_linkfest.aspx)