----------------------------Original message---------------------------- I suspect you mean IDRISI, which is maintained and sold by the Dept of Geography at Clark University. They have an email address - it's something like [log in to unmask] bitnet - and we've been very happy with it here. It's inexpensive (as these things go - a couple hundred dollars), good for students to learn on, has some image-processing features. Susan Stonich in Anthro, and Jeff Star (in DC but answering his email) have used/students have used, and could tell you more. Mary L. Larsgaard, UCSB Map & Imagery Lab