I have a Mac Pro running 10.6.2. The GPU is an Nvidia GeForce GT 120 with the single port.

In my previous Mac, I had a GeForce 6600 with dual monitor o/p's.

Thing is, I have put the 6600 into my new Mac but the o/p's aren't working?

System Profiler has both the GPU's listed, but all the 6600 has listed is:

Card - Display
Type - VGA-Compatible Contrller
Driver Installed - Yes
Slot - 2

Can anyone help please? Would really like to get both my monitors up and running...

Many thanks.