As a part of SEE-GRID-SCI NA3 activities, a two-day site administrator training event is organized by the Scientific Computing Laboratory of the Institute of Physics Belgrade on Thursday, March 5 and Friday, March 6, 2009. After detailed description of SEE-GRID-SCI operations and monitoring tools followed by demonstration, in several hands-on sessions new SEE-GRID-SCI site AEGIS08-PHY-DEMO was installed and configured. Since the new site is installed from scratch, demonstration of Operating System (OS) installation and configuration is preformed first. During the first day AEGIS08-PHY-SCL YAIM configuration file from SEE-GRID-SCI YAIM template is created, and using it User Interface (UI), Computing Element (CE) and site BDII (BDII_site) are installed and configured. During the second day Workers Nodes (WNs), Storage Element (SE), Monitoring System Collector Server (MON), Top-level BDII (BDII) and Workload Management System (WMS) services of new AEGIS08-PHY-DEMO site are installed and configured. During the training all installation and configuration problems are solved and participants are provided with solutions.