Hey that might be an easy fix. It is not the driver, but a setting. If you go to the device manager and then go to mice and other pointer devices, there should be a ps/2 compatible mouse and then go to properties. there is a advanced setting go to wheel detection and make sure that assume wheel is present. that should do the job.
Oh yeah you might have to reboot to make sure that the wheel mouse work.
Oh yeah you might have to reboot to make sure that the wheel mouse work.