After the ESXi 4.0 host is booted, you can manage the host by using the vSphere Client and vCenter Server.

The applications must be installed on a computer serving as a management station with network access to the ESXi 4.0 host. You can install vCenter Server in licensed mode or in evaluation mode.

You can download vCenter Server from http://www.vmware.com or use the vCenter Server installation DVD. You can download the vSphere Client directly from the ESXi 4.0 host or use the vCenter Server installation DVD.