The basic idea is that the image will be semi-random, composed of a collage of existing images. I havn't been able to find any good examples of reading / editing / returning valid image files. I know that the return statement is going to HTTP, so it has to start with "Content-type: image/gif\n\n", but what comes after that? I plan to work with GIF, but really almost any format would be ok. Does anyone have any suggestions? Places I could find examples? Examples? :)