If you are tired of the way certain keys on your system work, such as the Caps Lock key, you can re-map them to function as a different key by using a registry hack. But there should be an easier way, right?
I have been frustrated by the way the keyboard is mapped on a Macbook Pro running Windows 7 via Bootcamp.
For example, the older MBPs have the numeric pad "Enter" key on the right of the space bar and the right Apple key.
This app allows you to remap any key on the keyboard so I remapped that "Enter" key to the right Alt (Alt-Gr) key.
Highly recommend it and solves many problems with keyboard mapping especially if you have an international keyboard.
