Here's another one. I am slightly spastic, and rather twitchy, and very lazy, so I use a Microsoft Optical Trackball, which allows me to program one button to be exclusively 'double-click', then set the 'double-click speed' so fast I can't do it manually, and still have the normal three buttons (click, middle-, and right-click). Trouble is, ProE WF4.0 seems to be ignoring the signal from the one button that is 'double-click', probably because it isn't setup to recognize this particular driver. Can someone tell me how to fix this? I would really rather not have to go back to a standard mouse.jw