I'd say go for the latest ones. With mine I use 4.17.00.54.24. Not sure whether this is the latest or not.
If you have it on a 32-bit machine: http://www.nvidia.com/object/linux_display_ia32_1.0-6111.html If it's on an Athlon 64 or Opteron: http://www.nvidia.com/object/linux_display_amd64_1.0-6111.html