I want to thank everyone who sent me invaluable information (as well as suggestions for obtaining even MORE invaluable information.) I now have enough reading material to keep me busy all a long holiday weekend. AFter I finish all of this, I should qualify as Rutgers' resident listserv guru-- my sysops will be coming to ME! I want to especially thank Fred, who forwarded a number of documents, including the documentation on all the upgrades. I am going to have all this bound into a big thick book. Once again, thank you. Now even I can find out what a filter is. Louise Mowder [log in to unmask]