sony vgn-aw11z

Hi I'm a newbie and have got my Sony VGN-AW11Z with 2 hard disks booting properly, either with Windows 7 on one hard disk or SL 10.6.8 on the other one as shown here thanks to Chameleon. Booting with SL the keyboard, mouse, firewire, ethernet and sound are all working but NOT the graphics card...