Day-Z Wallhack Tutorial
Basically: Move all the files starting with plants* in the Arma 2 'arma 2 operation arrowhead\Expansion\Addons' to another location and when starting a game all plants are gone. You actually see everything the same way as you see it when you are off-map. Finding people/tents/crashed heli's is much easier this way. Even more disturbing: you have a clear line of fire to a person, and he doesn't!
That's alreay in this forum, it was posted by evan.