2 video cards - One is not recognized by bitminter

[chuckdarwin]

I have a Radeon 5970 card that I installed and get great results from it, but when I'm mining both core's the computer is so slow it's not usable.  So, I installed a second video card hoping to use this one and mine with the other.  I have a I7 cpu, so I figured I could still use the computer while mining.  When I installed the second video card it works fine, but the bitminter software does not see it.  Any ideas?
Best,
Chuck

[plectrum]

I don't know bitminter, but I am guessing that it is trying to use the CPU for mining and that is why it is slow.  Which OS and how are you looking at the CPU utlization?  I would take a look a look at the CPU utlization as that should be low while the GPU is mining since it does not need to do the work but just hand the work to the GPU.