Motorola i576 / i576s

I like this phone well enough, but I only use it like a phone, so I'm easy. Is there anyway to make the display less bright so when I open it at night or driving I'mj not blinded for 15 nminutes ?? What is that all about. I've had less candle power headlights in my car.
Know1@stny.rr.com
I would appreciate any advice whatsoever, as it's drivin' me NUTZ !!!
Thanx