This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
JSF is a standard (or at least its trying to be), so it should work well on JBoss. Remember that JBoss comes bundled with Tomcat. So, your code and WAR file should run the same on JBoss as it did on Tomcat or other JSP/Servlet containers.