If you are using Sun Java Enterprise System software, the Web Server is selected for installation automatically when you choose to install the Load Balancer Plug-in. However, you can also install Web Server software using these steps:
Launch the Java Enterprise System installer.
Select the Sun Java System Web Server component in the Component Selection page.
Choose “Configure Now” to be prompted for Web Server Configuration during installation.
When you are prompted, define a default Web Server instance.
Remember the port number you choose for this default Web Server instance. This guide assumes that port 38000 is selected as the HTTP port for default instance.