>> Can anyone tell me the easiest way to view serial data coming into a PC. > Also Jeff, remeber that the PC will transmit on pin3 and recieve on > pin 2 of a DB9 pin serial port, also make sure you have the ground on > pin 7 connected. This is incorrect. The correct pin usage is: 25 pin 9 pin RS232 signal male D-sub male D-sub transmit data (from PC) 2 3 receive data (to PC) 3 2 signal ground 7 5 Notice the different pin usage between the 25 and 9 pin connectors. Lee Jones ------------------------------------------------------------------- Jones Computer Communications lee@frumble.claremont.edu 509 Black Hills Dr, Claremont, CA 91711 voice: 909-621-9008 -------------------------------------------------------------------