Hi all I would be very glad if i could use the thomb 'back' button on my mouse for both 'middle' button in PRO/e and as 'back' button in Internet explorer. I really hate to use the wheel button in PRO/e, but ican not live without my 'back' button, when i browse the web. Can somebody tell me how to configure PRO/e wildfire to use the 'back' button on my mouse as middle button instead of the wheel button? I know it is possible, if i change the function for the 'back' button to 'middle' buttom in the mouse driver. But if i do this, the 'back button do not work in Internet explorer. OS: Windows XP Pro. Mouse: Microsoft Wireless IntelliMouse Explorer CAD: Pro/engineer wildfire Sorry for my poor english... Thanks in advance kh