Mounted ISO image, now what?

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http://www.linuxforums.org – Hi I have installed CentOS, ftp'd up and ISO image and I can see the files on the image. I'm a bit of a noob at Linux, so how do I actually "run" the contents of the ISO? What I'm trying to do is install TrixBox (PBX system) remotely via SSH and the command shell, no GUI access. So what should I be looking for, in Windows I would just run the "setup.exe", is there an equivelant for CentOS/Linux? Thanks a lot Sked (HowTos)