If You Are Creating Your Own Installation Package...
Windows XP/2000: Copy the .inf file to the <Windows>\inf directory and reboot the computer. The OS Plug&Play manager will associate the new hardware device with the NI-VISA driver once the .inf file is in place. If the hardware was installed before the driver software and .inf file, the device may need to be removed from the Device Manager before rebooting.
Windows Vista: In Windows Explorer, right-click the .inf file and choose Install. If you plugged in the device before installing this file, you may need to remove the device from the Unknown Devices class in the Windows Device Manager.
Linux: (PXI/PCI Only) Copy the .inf file to /etc/natinst/nipal/inf and reboot the computer.
Mac OS X: (PXI/PCI Only) Copy the .inf file to /Library/Application Support/National Instruments/nipal/inf and reboot the computer.