enabling the "fn-f7" switch monitor functionality

[Eitan Adler]

I have a key which is meant to switch between the built in and an
external monitor. This key is activated by fn-f7. xev does not report
any activity when it is pressed.
How get I run a script when it is pressed? I think this key is
supposed to report some sort of ACPI event.

% uname -rms
FreeBSD 8.1-RELEASE i386
Laptop model is Lenovo G530.



-- 
Eitan Adler