Attached Link: http://www.renderosity.com/messages.ez?Form.ShowMessage=1697420

That would be seriously cool! Of course there is the freeware plug-in "Cumulus", from Flaming Pear. It was available for a short time as an exclusive from one of the glossy UK graphics mag's CD-rom cover disks. They don't offer it on their website, but AS had permission and made it available sometime back. Maybe AS still has the file available? I used it on my latest gallery pic.