For a complete list of hardware and software requirements, see System Requirements for Windows SharePoint Services 3.0.

• The front-end Web servers must be running Windows Server 2003 Release 2 (Standard, Enterprise, or Datacenter). For more information about installing and configuring Microsoft Internet Information Services (IIS) and ASP.NET, see the Product Documentation for Windows Server 2003.
  

  Note:
  As with the Windows Server 2003 operating system, you must download and run Setup and the SharePoint Products and Technologies Configuration Wizard. As of Windows SharePoint Services 3.0 with SP1, you can now install Windows SharePoint Services 3.0 on Windows Server 2008. You cannot install Windows SharePoint Services 3.0 without service packs on Windows Server 2008.

• The front-end Web servers must be configured as Web servers (running Internet Information Services in IIS 6.0 worker process isolation mode) and must be running ASP.NET 2.0. Also, the Microsoft .NET Framework 3.0 Redistributable Package must be installed.
  
• The back-end servers must be running Microsoft SQL Server 2005 Service Pack 2.
  
• To use SQL Server Enterprise Manager, you must be a SQL Server database administrator.
  
• To configure IIS, you must be an administrator on the computer running IIS.