What's more, the list of functions available to map to is somewhat more comprehensive than the 32bit MS Intellimouse Software can handle, including things like:
Media Player control
Send a custom keystroke sequence
Launch your email (or any other) application.
Capture screen (or active window) image to clipboard.
Click-Drag [Sticky Buttons].
Save and restore desktop icon positions.
Vista (and Windows 7) support including some Vista/7 only featurs such as 'Flip 3D'.