(I guess there are plenty of molecular modeling apps out there ;-)) DINO is a realtime visualization program for structural biology data, including protein and nucleic-acid coordinates, molecular surfaces, electrostatic potentials, electron densities, surface topographs (from AFM), and MD trajectories. It supports PNG, TIFF, PostScript, and POVray output. http://www.bioz.unibas.ch/~xray/dino/ Jeff