jonthezman, here is a site for a venn diagram It is a JAVA window, so it takes a moment to load. click the check boxes to the right of the diagram, for a display. <A HREF="http://stat-www.berkeley.edu/users/stark/Java/Venn.htm" target="_new">http://stat-www.berkeley.edu/users/stark/Java/Venn.htm</A> It will give you and Idea of the simple and the complex at the same time.