Use your Mouse Wheel on Non-active Windows with WizMouse
WizMouse is a small mouse enhancement utility using which you can use the scroll functionality even on windows which are not focused using your mouse wheel. This is quite useful when you are working with multiple windows as you don’t have bring each window to focus to use the scroll utility.
When the program runs in the background, you can put your mouse cursor over any window and scroll it using your mouse wheel. One more of its usage is that it can add the mouse wheel functionality to applications that doesn’t support it. It does so by converting the commands from the mouse wheel into scroll commands. The program runs in the system and you can enable and disable it from there.
It is a freeware, very small in size and runs on Windows 2000, XP and Vista.