This web site claims to use something called the Adaptive Tree Algorithm to create LZW-compressed GIFs without using any patented algorithms. http://www.danbbs.dk/~dino/whirlgif/gifencod.html Source for gifencode.c is on the page. Is this for real? -- Don Marti | Use GIF images? You may already be a dmarti@zgp.org | criminal. http://zgp.org/~dmarti | whois DM683 | http://burnallgifs.org/