if you can do this with a p&s i don't know, but the norm for lightning shots (im assuming thats what you mean) is to just put the camera in manual, set the f/8 and the shutter to bulb untill you get a flash
if you can do this with a p&s i don't know, but the norm for lightning shots (im assuming thats what you mean) is to just put the camera in manual, set the f/8 and the shutter to bulb untill you get a flash