How to Program F13-F16 on Apple Keyboard?

This may well have been asked before but I wanted to know how do I program the F13 to F16 on the Apple Keyboard(wired). I want two of them to be able to dim and brighten my display as I use the keyboard with my Powerbook. I am running the latest Tiger.

There are various utilities you could use to do this...
But with my iBook and external wireless keyboard, F14 dims and F15 brightens anyway?

Have you tried them?

Aptmunich said:

There are various utilities you could use to do this...
But with my iBook and external wireless keyboard, F14 dims and F15 brightens anyway?

Have you tried them?

Click to expand...

Could you suggest one, preferably free and good to use on a powerbook.

.......scrap that just tried F14 and F15 and it brightens/dims my display.

P.S.- Could you suggets on of the various utilities to map the rest of the function keys?

Butler is one I think, I personally use Quicksilver as a launcher / hotkey assigner.
Google / versiontracker.com will help you find them