Make your light switch a dynamic entity and place it on the wall somewhere.
Make the light dynamic like some have said and make the main AI of the zone lightoff.fpi.
That should work. The lightoff.fpi script should be included with the stock of FPS Creator.
If not, here is the script.
;Artificial Intelligence Script
;Header
desc = Light Toggle (Off By Default)
;Triggers
:state=0:state=2
:state=1,activated=1:state=2,lighton
:state=2,activated=0:state=1,lightoff
;End of Script
Hope this helps! Have a good weekend and good luck.
Cheers and beers
,
King Cobra