Include a jboss-web.xml alongside your web.xml in your war's WEB-INF. Here
is a sample that will make your application the "root" application:
<?xml version="1.0"?>
<!DOCTYPE jboss-web>
<jboss-web>
<context-root>/</context-root>
</jboss-web>
You can optionally specify another context:
<jboss-web>
<context-root>myapp</context-root>
</jboss-web>
Which would then be accessed via:
http://domain/myapp
You can even do virtual hosting, using this:
<?xml version="1.0"?>
<!DOCTYPE jboss-web>
<jboss-web>
<context-root>myapp</context-root>
<virtual-host>apphost1</virtual-host>
</jboss-web>
And then define hosts in your deploy\jbossweb-tomcat41.sar\META-INF\jboss-service.xml