Ok - I gave this a shot. I had to convert the file to DNG format so CS3 could read it.

I brought in two different exposures settings from ACR and blended them in PS.... Now that I am looking at it from the internet, I am not sure I like the top of the mountain in this shot. This was a pretty quick adjustment, but this is what I have.







I have been playing with a demo version of Photomatrix, so thought I would try that with your file. I saved three different exposure setting in ACR, and imported those three files into Photomatrix, then played with it a little in both Photomatrix and PS. I thought it would be interesting to see the difference. I think I like what Photomatrix did to the trees better than the other version.





You can see it has the photomatrix watermark because I do not think I will purchase the software; I am only using the demo.

Hope this is helpful - thanks for letting me play with it.

Dave