[rules-users] Simple JBoss Rules Sample

Hello All: I am brand new to JBoss Rules / Drools development. I have found the examples with the version 3.0.6 download extremely unenlightening. Can anyone point me to a simple starter application to get a feel for how all of this works? A simple thick client GUI or command line application would be great. Preferably not just a collection og JUnit TestCases, but a real application, no matter how simple, that shows how to exercise the rules engine from Java would be very helpful to me. Thanks, Robert