Can't Install CS3 on iBook

Hello,
I'm trying to install CS3 onto an iBook G4, and it's not working. When I insert the install disk it shows up on the desktop. I can navigate through the contents, but when i click on the setup to start the process nothing happens. I am not prompted for my password and there are no error messages that pop up. Any help would be much appreciated in figuring out why this is happening. The computer is running OS X (version 10.3.9)