Dear CCl-ers I am user of MOPAC6.0 under Windows95/NT. I took this software from http://ufark12.chem.ufl.edu/victor/mopac/index.shtml . I try to generate a graph file using GRAPH keyword, but it is not working. For any sugestions I will be very obliged. Tom Tomasz Girek Graduate School of Biotechnology Korea University 5-1, Anam dong, Sungbuk-ku 136-701 Seoul, Korea girek -AatT- kuccnx.korea.ac.kr