WizMouse is a mouse enhancement utility that makes your mouse wheel work on the window currently under the mouse pointer, instead of the currently focused window. This means you no longer have to click on a window before being able to scroll it with the mouse wheel. This is a far more comfortable and practical way to make use of the mouse wheel. WizKey can also optionally enable the mouse wheel in applications that don't support it.
Windows doesn't allow you to scroll an out of focus window using the mouse wheel which sucks...if you care about that sort of thing. Well now you can fix this little problem using WizMouse. Just install it and you will be able to scroll windows even if they are out of focus, also WizMouse will add mouse wheel support in apps that won't let you mouse scroll. You can make WizMouse start with Windows and change the number of lines to scroll using the options screens which is handy, also the app only used 5MB of memory in my PC so it's not resource hungry. In conclusion this app does it's job without too much fuzz so give it a try if you are interested. Available for Windows 2000/2003/XP/Vista.
Get it at http://antibody-software.com/web/software/software/wizmouse-makes-your-mouse-wheel-work-on-the-window-under-the-mouse/