ok, I don't know why I didn't mess with this earlier, but the script was easy.
you need mortscript 4.1 to run
put the script file in "\windows\start menu\programs" and then you will be able to assign it to a button.
Code:
SetBacklight( <battery>,<external> )
I set mine to go full bright for 1min then go back to my preferred setting.
Code:
SetBacklight( 10, 10 )
Sleep( 60000 )
SetBacklight( 5, 10 )