I've been working on this, so far with zero success. There is no "pattern" to the noise (back scatter) and a lot of it is saturated. I think it is impossible. I have tried a median filter then run a top hat sharpen which improves the image but not enough. I tried a find edges then averaged this with the origional, then a subtract and this nearly worked. Basically I have given up and decided to improve the images which I can.
Sorry John, but if the noise is random, it presents a real problem for software.
If you really must use P2P software use WinMX as this is "spyware" free, use "Kazaa" or Kazaalite" and you're opening up your 'puta to a world of hurt.
If you still aren't persuaded to avoid it, at least get some info before putting it on your machine, start here and check out the posting by Audiodood he know's what he's talking about.
PS same goes for Grokster etc, and if you're going to do this make sure you up your specs on your PC security, you'll find all the info you need via other pages and forums on the link above
I don't use P2P software - my PC is for my use only.
I've used the 'rubber stamp' tool on some of the shots which is adequate.
I borrowed a Nik 5 and 102 strobe to take the shots and its a steep learning curve to getting decent pics, particularly getting the lighting right. The fruits of my labours will be available on the board soon.