>Now if only IBM had kept all the input pins on the printer ports the same >polarity, I'd be walking on Cloud 9. Wake me up when the ride is over! Bob, If mis-matched polarity is a problem, why don't you use the Parallel port in "Extended" Mode? myke Today, the commercial sector is advancing computer and communication technology at a breakneck pace. In 1992, optical fiber was being installed within the continental U.S. at rates approaching the speed of sound (if computed as total miles of fiber divided by the number of seconds in the year). Aviation Week and Space Technology, October 28, 1996