You can place them in server/default/lib. Another possibility is in common/lib, but then you would be mixing your JARs with the JARs that come with JBoss AS. If you prefer to keep them separated, then server/default/lib would be the better location. Of course, the above advice assumes that your JARs do not conflict with the JARs provided by JBoss AS. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4201143#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...