Well, you can use the Jems Installer on the jboss.org website. I am a little confused, the jems installer is an installer, to install jems products. So you don't install the jems installer, you run the jems installer from the website. So when you go to download the JBoss AS use the web-install. That is the jems installer. And it is a wizard, so just check it out. Don't worry if you do something wrong, if it installs files, then just delete those files and directory, it won't harm anything.