Remap only the Exposé key for Spaces use on Unibody laptops. The Unibody Macs have some pre-defined function keys that are hard to remap. For those of us who use Spaces, but not Exposé, here's how to remap the key. The Exposé key on Unibody MacBook Pros can't easily be remapped through System Preferences without unmapping all the other special function keys, like volume and screen brightness.
If you just want to remap the single Exposé key, here's how to do that: First, download and install the open source KeyRemap4MacBook System Preferences panel. Download. Downloads for Max/MSP/Jitter including the MMJ Depot.