remembered how I got the script "~/bin/bright" to be on sudo's path.
# ln -s ~/bin/bright /usr/bin/bright
a bit of a cheat, but it works dandy.
BTW - here is that script.
echo 100 > /proc/acpi/video/GFX0/DD02/brightness
why do I need it? because my brightness buttons don't work unless I disable ACPI :(