Ubuntu 12.10 Macbook Pro Install Problems

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http://askubuntu.com – I have a Macbook Pro (probably the newest one, but NOT the retina one) here. I want to dual-boot Ubuntu 12.10 on it, but I've been have many troubles. YouTube has offered me no help; same with Google. If I make a DVD or CD (the CD would have to be of Ubuntu 12.04 due to file size), it boots from it, but won't even get to the purple screen. It just stays on the first black screen with a white blinking cursor. Nothing changes. I can't make a bootable USB stick for mac, though. I do have another computer with Ubuntu on it, but ever since it started to crash when I make a bootable usb, I starte (HowTos)