Announcing AMPAC 4.0 with Graphical User Interface Dear Netters: Professor Dewar is very near retirement and has asked that I take on the responsibility of promoting and maintaining AMPAC, and I have accep- ted. He has further asked that AMPAC be marketed in order to pro- vide a stable source of funds for maintenance and expansion. We have established Semichem, Inc. to carry out this task. The new AMPAC includes Professor Dewar's "next generation" semiempirical method, SAM1, which will soon be parameterized for transition metals and other elements requiring d-orbitals for proper treatment. Other new features include an annealing routine for locating minima, the MNDOC and PM3 Hamiltonians, improved and corrected CI treatment, the AMSOL models, NBO and ESP population analysis methods, and an XWindows/Motif Graphical User Interface that will run on virtually any system. In addition, Semichem consists of former Dewar students, offering the best possible programming and scientific support available. Please contact me below if you have any further questions. Academic pricing is available. Andy Holder =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= DR. ANDREW HOLDER Assistant Professor of Computational/Organic Chemistry Department of Chemistry || BITNET Addr: AHOLDER@UMKCVAX1 University of Missouri - Kansas City || Internet Addr: aholder@vax1.umkc.edu Spencer Chemistry, Room 315 || Phone Number: (816) 235-2293 Kansas City, Missouri 64110 || FAX Number: (816) 235-1717 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=