video cards

utilize both video cards on MBP?

riviera's picture

I have a MBP with NVIDIA GeForce 9400M and NVIDIA GeForce 9600M GT

Can anyone please help me to utilize both cards; as in when I connect an external display such as LED cinema or video projector, I would have thought the NVIDIA GeForce 9400M would take care of the MBP LCD and the NVIDIA GeForce 9600M GT would run the external display!?

When I check the system Profiler - it seems that the NVIDIA GeForce 9400M is running both displays!?....

Sorry I know this isn't kineme related - but couldn't find any help/answers on apple support!?