> Does anyone know a free program capable of overlaying crystal > structures?
In mercury (http://www.ccdc.cam.ac.uk/products/mercury/) there is an option for a manual graphical structure overlay, but this option is only available when the CSD database is installed. Regards, Leonid ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ