Macbook Backlit Keyboard - Working Boot Camp Fix!

I just discovered a small tool which fixes the Boot Camp keyboard backlight drivers... It basically allows the user to turn off keyboard leds completely or turn off Boot Camp's poor auto-adjustment, without a need to kill bootcamp.exe

http://www.powerplan7.com/features_macbook.htm

You might ask, what's the question? OK, I'd like to know is it possible to somehow turn Macbook keyboard backlight off WITHOUT using this 3rd-party tool... Does anyone know is it a registry fix, driver command or something else?