Installing the network version is easy, despite the length of the instructions! Here is a summary of the steps to take. Please refer to the earlier pages for full details.

1. Write down the IP address of the machine that will act as the keyserver.
2. On the keyserver machine, install the keydriver software (download it here). Then plug the network key into a spare USB port. After a few seconds Windows will recognize the key, and its green LED will illuminate. This is important, as the green LED means not only that the key is getting power, but that the driver is correctly configured and can see it. Point a web browser to http://127.0.0.1:7002 to check that the correct number of network licenses are shown.
3. Move to a client machine, and point a web browser to http://{IP address of keyserver}:7002 and check that the key can be seen from the client machine. Install the latest version of ZEMAX. Download the file sntlconfig.xml from the link below, and edit it so that your keyserver's IP address is between the 'Contact Server' tags. Save the file in the same folder as the zemax.exe file, and run ZEMAX
4. If ZEMAX does not see the key, configure any firewall software on the client machine to allow zemax.exe to access the network.