Black screen of death on Live KDE 11.2

I make a OpenSuSE 11.2 KDE live cd and a DVD…
on the DVD right after installation the system couldn’t boot, only blank screen appear.
then I try the live cd, but right after the grub loader, after it says “loading kernel” and show the loading progress under the SuSE logo it just show me a blank screen…
Now I read the topic that says there are troubles with ATI cards, and I use ATI… and I try in the GRUB boot option to write “vga=0xf06”… but maybe I get this wrong? is that what should I do?