[link|http://216.239.51.100/search?q=cache:tU3ODXYk6BsC:msdn.microsoft.com/library/en-us/winui/mousinpt_5ir0.asp+%22mouse+wheel%22+%22windows+95%22+mswheel&hl=en&ie=UTF-8|Google cached MSDN sez:]
"Windows 95 and Windows NT 3.51: Support for the mouse wheel is provided through a separately-running module, MSWheel, that generates a MSH_MOUSEWHEEL message. The MSWheel module, which consists of MSWheel.exe and MSWheel.dll, is installed with the IntelliPoint software that is shipped with the IntelliMouse\ufffd pointing device. In addition, MSH_MOUSEWHEEL is defined in the header file (ZMouse.h) that an application must use to implement support for the wheel via the MSWheel module."
I'd take the advice of the other(s) here and try installing that IntelliMouse SW.
I'd imagine the pan mode works because that is just a middle mouse button press.
If that doesn't do it then a couple of Q's are in order:
- Did the old mouse have a wheel?
- If so, did it work?
- Is your laptop running Windows 95?