I have a dual 2.5 Mac. running 10.4.8 OS. The permissions are messed up. I just tried to install a new program I received and it failed and told me I do not have proper permissions. How can I fix this? I remember back in the day on a Unix machine, going to a terminal window and doing a CHMOD bla bla bla. But I'm not sure that will work and I do not know the exact syntax to perform that task. Suggestions? I realy need to install this software. Much thanks!