2000.10.25 21:06 "tiff conversion", by Traore Djeneba
2000.10.25 21:24 "RE: tiff conversion", by Wharton Sinkler
Try ImageMagick
http://www.wizards.dupont.com/cristy/www/api/image.html
and for background:
http://www.wizards.dupont.com/cristy/ImageMagick.html