http://www.business2.com/articles/web/print/0,1650,37137,FF.html Not real detailed, but a good overview. Makes up a good part of what I do. For years I've had a sign on my wall: "It is fruitless to attempt to indoctrinate a superannuated canine with innovative maneuvers." Reminds me not to be an old dog, and to keep teaching other old dogs all the new tricks we can come up with. I don't wanna be called a hamster hunter unless I can call myself the Hyamstuh Hunta and dress like Steve Irwin.