Just install both of these copies: 1. 7601.17514.101119-1850_x64fre_server_en-us_VL-GRMSXVOL_EN_DVD 2. 7601.17514.101119-1850_x64fre_serverenterprise_en-us_VL-GRMEXVOL_EN_DVD and notice with ISO #1, I have the options to install all editions of Windows 2008 while ISO #2 only have the option to install the Enterprise version of Windows 2008. So, given that, why would anyone need ISO #2 when ISO #1 can install Enterprise version as well? Thanks!