Hello, Maybe I'm a bit late, but here's my version: http://ns.atn.ro/~attila/mad21_w.jpg Adjusted highlights with 70%, high pass sharpening 65%. All done in Photoshop 8. I think Larry's version is better, I couldn't get the sky that blue.
BTW, I have a link with a good PS tutorial I want to share: http://luminous-landscape.com/tutorials/workflow1.shtml#ADJUST%20CONTRAST%20AND%20SATURATION it is rather complex, but can yield good results. Attila

