driver for 8400M GS? driver installation problem

I am trying to install CUDA in a DELL notebook with an 8400M GS.
I tried to install:
NVIDIA Display Driver for Windows 2000/XP version 169.21, 12/05/2007

But it claims that it does not support that GPU.
Am I doing something wrong?

Thanks

No, you’re doing everything right. Those drivers won’t install on mobile GeForces.
One solution is to go to laptopvideo2go.com and get modified .ini file for 169.21. After that everything will install just fine.
Another solution is to wait until DELL will release 169.21.