Okay, I got ahead of myself. I just switched from Win XP to Mac OS X. I assumed I could figure out how to burn a bootable CD from Mac OS X but... sadly I was mistaken. I have this ubuntu-5.04-install-powerpc.iso file and the site act likes it should be easy to make into a bootable CD on which I could install the OS ubuntu. I need it for a college compy class. The prof told me to become familiar with OS X and ubuntu so I could help as an assistant, but I am having a hard time. Could someone give me a step by step process of how to do this it would be amazing. Thank you and I apologize for my newbness.