Ok, I jujst got a brand new Dell XPS laptop a few days ago. I managed to 
install Windows 7 and SL 6.1 side by side in a dual boot setup.  This 
laptop has the core i7 processor, which means it has integrated Intel HD 
3000 graphics, but it also has a 2GB Nvidia GT540M (with optimus) 
discrete card as well.  I know that optimus is not natively supported 
yet, but according to the SL forums, the generic nvidia driver can be 
installed instead (kmod-nvidia). The instructions said to just do "yum 
install kmod-nvidia".  This installed the drivers for me and when I 
rebooted, I saw the plymouth-rings splash screen for the first time 
ever, but the system hung.  I restarted again and pushed ESC to see the 
messages and the screen flickered a few times and it stopped on 
"registering binary handler for windows applications" Some googling 
informed me that this was due to the wine service being enabled, so I 
disabled it and restarted.  This time, it got hung on "starting atd:" 
and the screen flickered a few times.  I have a feeling that if I 
disabled atd, it would just hang on the next service. I had to uninstall 
the kmod-nvidia package just to boot my system again.  There has to be a 
way to get the nvidia driver working.  Any help would be appreciated.

Kevin