Core Configurator is a better tool with the capabilities to configure your system for more efficiency and productivity.
As the name suggests this effective system configuration utility will make your system more efficient. This application comes to you in a graphic interface to configure your Windows Server 2008 Core edition for more efficiency, effortless management and productivity. This fully functional tool enables features like: product activation, configuration of display resolution, configuring your clock and time zone, remote desktop configuration, managing all the local user accounts, configuring your firewall, WinRM configuration, options to configure your IP address, manage your computer name and domain/workgroup membership, and allows for easy installation of Server Core features or roles.
This must have tool is absolutely free for non commercial use and is fit for your Windows 2008 server core edition.