Thank you very much. I have a few more questions. Is there anything I need to do different since the people who will be using the mac to run afni will be in tcsh. I know how to add step 4a to the global path so any user on the computer will have their path set correctly, is there a way to add line 4b to a global tcsh settings file if there is such a thing? my objective is to make a 10.7 image and then deploy it to many macs so any settings i can make happen on a global level are best. I will not be installing afni to any user home directory but rather the root of the Macintosh HD in the abin folder, so I think that would change a few commands as well like the path but i think i can figure that out. Also does the installation of the 10.7 afni require xcode and if so what version of xcode should I install?