That should get them going. It's true I tell you! http://www.newscientist.com/article/mg19225753.500?DCMP=NLC-nletter&nsref=mg19225753.500 New Scientist teaser part article, but Gaygoyle will know. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist