As the title says it our friends at http://www.blastwave.org have created a JBoss package that you can install.
Some key points to this are:
1.) JBoss packaged into Sun's PKGADD formated package. So, this could be deployed on production servers cleanly and with a 'known' location. Would also be ideal for JumpStart setups.
2.) The JMX Console is hardened by default and admin locked.
3.) Init scripts are properly placed & if using Solaris 10 the SMF service is properly setup.
Links:
http://www.blastwave.org/packages.php/jboss3
http://www.blastwave.org/packages.php/jboss4