Hello, in the GROMACS 3.0 article, QMMM implementation is mentionned as a future development. I would like to know if you have any idea of when this will be available ? Thank you for your job, Hagop. -- Hagop Demirdjian Département de Chimie Ecole normale supérieure 24, rue Lhomond F-75231 Paris Cedex 05 Tél. 01 44 32 24 10