Installing Windows Server 2008 is different from previous installs of Windows Server platforms. There is no text-based phase. The installation is now done in a GUI and the install process is very similar to Windows Vista.
Windows Server 2008 Editions
Windows Server 2008 Standard (small offices or workgroups)
Windows Server 2008 Enterprise (greater scalability, failover clustering, AD Fed Services)
Windows Server 2008 DataCenter (larger orgs and server consolidation projects, greater memory and processing power, unlimited virtual image use rights)
Windows Web Server 2008 (standalone server for IIS)
Windows Server 2008 for Itanium-based Systems (highest level of performance and scalabiity, leading rival platform for Risc-based UNIX servers, requires Intel Itanium CPU)