A CHILLING exchange on an internet chat board for rat terrier owners shows how a Kansas woman, who allegedly ripped the baby out of a pregnant dog breeder, set up the meeting. Other exchanges show how board members figured out what must have happened and pointed police to the suspect. The first message in the tragic chain was posted Wednesday at 4:22pm, by a woman calling herself Darlene Fischer, with the screen name "fischer4kids" -- but who authorities have said was really accused killer Lisa Montgomery. The note was the bait to trap victim Bobbie Jo Stinnett. "I was recommended...