Doug, I am no good at rembering quotes from the bible and where they came from and I will try to find some referene tommorrow. I think it starts in the OT with somebody consulting a medium instead of God.Like it or not, these matters are religion specific and in some cases divisions within a religion. I am one of thsose Christians who believes in the unseen world. It would be impossible to proove one way or other but my personal feeling is that when people think they are talking to the dead, they are in fact communicating with imposters - demons/ evil spirits.
Jon