Here you go, enjoy: http://www.gamerenders.com/forum/index.php...00697&hl=target Thats the best one to learn from.
First sig he arrowed the Lighting Second sig he arrowed the targets Third sig he arrowed the rings.. I found the rings and targets, so the only other thing is lighting.. Which is either brushing on Overlay, or adding Brightness/Contrast as faith said.
use a soft 30 pixel brush (one of the defaults) and then put it to overlay/lighten/screen sometimes just change opacity instead of changing the blending options. you can also duplicate the white brushed layer and blur it to get a similar effect.