No special requirements. You can use either a 32-bit or 64-bit JDK, though since you are using 64-bit Windows 2008, you might want to use a 64-bit JDK (NOT the Itanium one!) If you are going with JBoss 4.2.3, note that there is JDK5-related binary download and a JDK6-related binary download - make sure you get the one that matches your JDK, As a complete example, from Sun's web site download and install JDK6u11, platform Windows x64 (hint: do not install into Program Files - avoid spaces in the path). Set JAVA_HOME. Download and unzip jboss-4.2.3.GA-jdk6.zip (once again, not in Program Files). That's it! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4202967#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...