Select SQL Server 2000 Components, select Install Database Server, and then setup prepares the SQL Server Installation Wizard. At the Welcome screen, click Next.
In Computer Name dialog box, select Local Computer or Remote computer.
In the Installation Selection dialog box, click Upgrade, Remove, or Add Components to an existing instance of SQL Server, and then click Next.
In the Instance Name dialog box, Default is selected if you have the Default instance installed. If you want to uninstall a named instance, select it from the Instance Name list box, and then click Next.