Hyperchem is nice for small molecules on PC Windows but for heavy duty protein work you need a real workhorse of a Unix workstation with Biosym, Tripos, etc bear -- * UU UU SOARING BEAR * * UU UU A Pharmaceutical Molecular Modeling * * UUUU AAA U.A. New Pharmacy 404, Tucson, AZ 85721 * * AA AA e-mail:bear at ellington.pharm.arizona.edu *