Okay, I've downloaded the Ubuntu 10.04 .iso for PPC mac. What do I do to the iso file to make it bootable? Keep in mind, all the stuff that i am going to be doing, will be done on a mac.

P.S. Please keep instructions as easy to understand as possible

P.S. AGAIN I downloaded the Ubuntu 10.04 (for ppc mac) .iso from " http://cdimage.ubuntu.com/ports/daily-live/current/ "