This installation instruction is intended for initial installations where the database, application server and client all run on the same machine. For more complex installations, see Installation Steps . An installation can take as little as 15 or 20 minutes if you start with the required downloads and do everything correctly. Other alternatives you might want to investigate are the Windows Installer or VMWare/VirtualBox AVA packages. However, the following method will give you much more control over the installation including upgrades with the latest patches and scripts. Before you begin, download each of the following packages: § Java SE Development Kit - Get the latest from http://java.sun.com/javase/downloads/index.jsp . You only need the JDK without JavaFX, EE or NetBeans bundles. § Postgre SQL - Get the latest Windows install from http://www.postgresql.org/download/windows . § ADempiere Latest Release - Download the latest Ad