Grizz: If you\'re using the screen, most of the newer cameras have a nifty feature on them. If you push the button part way, the bracers around your target should change from blue to red, indicating focus, and then you snap the picture.
If you\'re using the manual lens to conserve battery power, it\'s all guess-work, because it doesn\'t reflect what the screen can pick up. On the whole, the expense of the batteries (I average about 120 photos per pair of AA\'s) balances out to worth it, I think.
And remember to take the batteries out when you aren\'t actually using the camera.