Have you tried
If you don't like having no root context have a look at
http://www.jboss.org/modules/bb/index.html?module=bb&op=viewtopic&t=forums/ vote is for putting Tomcat's kludge into
JBoss that says something like
context = "";
just to avoid the ugly .war trick
Looks like a duplicate post on my part.
Still I don't pay for the disk space :-)