Microsoft Knowledge Base Article 891275 contains the following summary:
You can use Remote Installation Services (RIS) in Microsoft Windows 2000 Server to install Microsoft Windows 2000 Professional,
Microsoft Windows 2000 Server, or Microsoft Windows XP Professional on a remote client computer. To use RIS to install Windows 2000
Server or Windows XP Professional, you must have Windows 2000 Service Pack 3 or a later version installed on the server that is running
RIS.
RIS requires specific hardware and software on the server and client computers. After you have configured the required
hardware and software, install RIS on a Windows 2000 Server-based computer. RIS must be installed on its own hard disk partition with
at least 800 megabytes (MB) to 1 gigabyte (GB) of free space. After RIS is installed, the RIS server must be authorized by the Active
Directory directory service.
The client computer can connect to the RIS server by using either a Pre-Boot Execution
Environment (PXE) ROM or a RIS boot disk. After the client computer connects to the RIS server, you can use the typical
installation procedure to install the operating system.
