from Larry Ostermans Blog:
http://blogs.msdn.com/larryosterman/archive/2005/01/05/347314.aspx

From MSDN the start page for Reference to Process and Thread
http://msdn2.microsoft.com/en-us/library/ms684852.aspx

From AMD a light intro:
http://developer.amd.com/articles.jsp?id=77&num=1

Old new thing. Many posts are dead, but this lives today…
http://blogs.msdn.com/oldnewthing/archive/2005/07/29/444912.aspx