jboss.server.home.dir points to $JBOSS_HOME/server/default (assuming you are starting the default configuration) folder. So that property should be set to:
A lot of the web sites on Google state how to enable SSL for JBoss 3 - 4. I need a good tutorial for JBoss 5.
JBoss AS 5 documentation is scattered across various wiki and forum posts. You can search these places or you can buy the JBoss In Action book by Peter Johnson which concentrates on various configurations in JBoss AS 5.