You've specified the namespace using JBossXmlSchema annotation. Which is correct. You should still add namespace element to the XmlRootElement annotation, which is a bit confusing having JBossXmlSchema. You don't have to do that XmlElement annotations.
Unfortunately, we don't have JAXB tutorial for JBossXB. But you can find one for JAXB on Sun's web-site and use javadoc. For examples you can see tests in XB http://anonsvn.jboss.org/repos/common/jbossxb/trunk/src/test/java/org/jboss/test/xb/builder/object/