huifang liu wrote: > When I finished inshalling modeller , I typied the command mod9v2. > But the computer replied me with the sentance:The command can not found > .Can you tell me the reason?

I guess either the installation was not successful, or you did not read the installation instructions carefully enough. See http://salilab.org/modeller/release.html#install for installation instructions. In particular, if you use the .tar.gz installer, the Modeller binary is not installed into your system path by default.

Ben Webb, Modeller Caretaker