Hello, I'm french and i just begin in mining

I try to mine ZCASH with old Nvidia GPU (9600GT). But, when i run the miner, it closes instantly. I can read before close, "Error: Cuda driver version is insufficient for cuda runtime version" ... I don't understand

I have install CUDA 9.1 and 341.92 driver

Maybe I should have install CUDA 6.5 ??

Can you help me please

(Sorry for my bad english  )

Matt