Thx Michelle for another valuable link. I don't use Photoshop, I have PSP9, but I find the links you post always informative and interesting you are quickly filling my favourites folder :) I assume the curves function in PSP dos exactly the same as in Photoshop - nearly all articles in mags and tutorials on the web seem to be for photoshop perhaps I got the wrong software :( Richard.

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html