Microsoft has written a knowledge base article about Netset.exe.
Article Q268781 - Description of the Netset.exe Tool from the Windows 2000 Resource Kit, begins with:
"This article describes how to use the Netset.exe tool that is included in the Windows 2000 Resource Kit.
Overview and Use of Netset.exe
Netset.exe is a standalone utility that you can use to add, remove, or change the network configuration of a client computer that has Windows 2000 already installed on it. For example, you can use this tool to remove a protocol, such as Internetwork Package Exchange (IPX) or NetBeui, from a client that is no longer used on your network. You can also use this tool to change the Internet Protocol (IP) information on a group of servers or workstations without using the user interface.
Netset.exe uses an answer file to perform the configuration of the network components. The procedure follows the same format as an unattended setup answer by using the Network section to configure the client."