Microsoft Knowledge Base Article 892680 contains the following summary:
This article contains the steps and the recommendations to install Microsoft Site Server 3.0 on a computer that is running Microsoft Windows 2000. Site Server 3.0 has several requirements to be installed on a computer that is running Windows 2000. Additionally, we have several recommendations for the installation of Site Server 3.0 on a computer that is running Windows 2000.
To install Site Server 3.0, you must install and configure SQL Server 2000, install Site Server 3.0, install Site Server 3.0 Service Pack 4 (SP4), and then install the latest Windows 2000 service pack.
After you install and configure Site Server 3.0, we recommend that you copy updated sample files to your Site Server 3.0 installation folders and that you review Site Server 3.0-related security documents.