Drools Guvnor is not a JBoss Application Server version, is a web application developed for another project, JBoss Drools. What you have downloaded is a demo bundle that contains a configured JBoss AS with Drools Guvnor already installed; this bundle is intended for testing and evaluating the Drools project and the Drools Guvnor component. It has no relation with JBoss Jbpm and cannot be used with it (at least, not without some difficulty).
What you are describing is probably a Drools application (you are describing a rule-based interaction), so you better ask on that forum.
Michele
PS: By the way, if you already made up the war, it should be enough to put it in the server/default/deploy directory...