Hi Tony, Some time ago you were looking for a "pdb to mmdb" file converter...Did you find the answer? Could you share it with me? I am now facing the same problem! Thanks for your help! Marc -- Dr Marc Creus Ward Group Université de Neuchâtel Laboratoire de Biochimie Rue Emile-Argand 11 Case postale 158 2009 Neuchâtel Suisse/Switzerland Tel. +41-32-7182226 -----