See:
http://www.develop.com/us/site/port.aspx?r=5 Old Link: http://www.develop.com/dm/courses.asp seems they've updated their website...
Home of "Guerilla COM," and heavy advertising of the same. (So if you know any guerillas who need to use COM... ;-)
A few years ago I attended their "Essential COM(+): for C++ programmers" course and was very satisfied with it. It was the best course I could find on COM -- for programmers who are *NOT* neck deep in GUI code.
(Everyone else was teaching variations of the Microsoft course, which assumes you're "trying to make a VisualBasic forms-based GUI business application" in C++ with MFC.)
They do good work.
-- JeffGrigg