Finally got the W1WEF interface working ! Seems that I had to go into computer setup menu and change LPT from Centronics to bi-directional. This is what happens when we're not as computer literate as we should be. A very special thanks to W1WEF (who double checked his interface & shipped it back), K5TR, K9MI, AI9X and ES5QX. All these fine folks attempted to help me solve the problems. Thank you !!! 73, Jerry N9AVY