Windows has detected that both Windows Terminal Services and Windows Clustering Services are installed on this computer. You must uninstall one of these components before you upgrade to Windows 2000 Advanced Server.
To uninstall a component, in Add/Remove Programs in Control Panel, click Add/Remove Windows Components. In the Windows Components Wizard, click Next, clear the Terminal Services or Clustering Services check box, and then click Next to remove the component.
You can then run Windows 2000 Setup again to upgrade your computer.