Ok, so I have been an absolute lurker. Heh. But I totally love the tutorials here! and now I find myself in need of help. I have this pic. It's really dark. And I am trying screen and it's just not cutting it cause if I screen it too much it gets all blocky.

you can see the image here
Please help cause I really wanna do something with this image but I can't work with it being so dark! ;_;