Cool Mouse

The right-mouse button in Windows gets a good workout,
but that poor old middle button on three-button mice
gets ignored. Cool Mouse rectifies that. Once it's
running in your system tray, this great tool lets you
use your middle button to pop up the Start menu underneath
the mouse cursor, minimize windows to the system tray,
roll up windows to their title bar, and more. Customize
any window to have its own features layout. The "Fast
Folders" feature can display a pop-up menu with your
favorite folders for easy navigating in Open/Save dialogs.
You can also make the middle button simulate a double click,
scroll the current window, and take advantage of fast program
configuration through hotkeys. Even if you have a two-button
mouse, your right button can duplicate Cool Mouse's functions
when you press the Scroll Lock key.