blurring and lighting

hi. i'm a long time lurker. this is my first time posting. i want to know how to make this kind of effect. blurring and lighting different spots. I want to know how she made them glow and blur like that. Dont mind the border or the lettering. i have CS2 by the way. i tried asking the person who made it how, but she says "haha! its a secret! you'll never know" so i'm here to find her out..