> After playing for an hour I came up with this: > http://www.flickr.com/photos/imagesbyrenate/38611484/ If that's seriously only an hour's work It must be a good prog. That's a very pro looking effort. Where can I pay $400 for it (to make it a legit program) I've only just downloaded it myself: I stumbled over the like on Paul Bourke's site while reading up on FFTs and how to form self-tiling by the invers FFT of random noise ... I really must install it and have a go. Bob