ATI Install
From OSx86
To enable native QE graphics output on an ATI graphics adapter, you always need a framebuffer.
Either a pre-definded framebuffer can be used, or you can patch an existing one to match your graphics adapter's configuration of DVI/HDMI/VGA/Displayport.
[edit] Pre-definded Framebuffer
You can choose from the pre-defined framebuffer with Kaby's edition of the Chameleon boot loader.
Example:
AtiConfig=Shrike
[edit] Patching Framebuffer
The patching was discovered by bcc9 in this thread. mucha made a guide howto patch.