Now you're going to be in for a treat. Go to the following link:

Photoshop Tutorials videos

Scoll down until you see Darken the Sky. This is all you'll ever need to get the detail out.

I met the guy that did these tutorials and there is nothing he doesn't know about Photoshop. I've not used elements 5 but you may still be able to use some of these techniques.

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Paul

www.phrphotography.com