I've found many sites showing how to make an OSX live USB or External HD via Mac's Disk Utility. However, because of my recent troubles, my Mac Pro doesn't have a working OSX, and I can't access disk utility with my Snow Leopard install disk. I'm using a flashed PC graphics card, which leaves me with no picture until the login screens appear.

Is there any way to create a live cd/usb or external hard drive of Snow Leopard while in Ubuntu?