OK, following some advice, I tried a combination of HDR using Photomatix 4.01 (buy it now why the US dollar is so low!!!) and some shadows/highlights in CS2 and the deep space noise reduction action from Noel Carboni's tools (I bought this over a year ago and to be honest, had forgotten that I had it lol).
http://farm5.static.flickr.com/4045/...5370a307_o.jpg
It's a big image (800kb). It's probably over processed now, but it does show considerably more whispy details.
What do you guys think?
Dave