From Microsoft (archived):
Microsoft IntelliType Pro software provides full functionality for the Microsoft Natural? Keyboard Pro, Internet Keyboard Pro, and Internet Keyboard. It also gives you the power to customize your keyboard Hot Keys and settings. This software is not intended to work with Microsoft Natural Keyboard Elite or any non-Microsoft keyboard.
What's new in this version:
Reassign many of the keys to open a program, file, Web page, or shortcut, or to perform a command, such as Select All or Close
Disable keys you sometimes press accidentally, such as CAPS LOCk