Check out the SOAP documentation that you get in the download. The URL is http://:/soap/servlet/rpcrouter.
JBoss does not generate the WSDL file. You will need to use a tool to do this. One is available from IBM as part of the Web Service download. If you are using NetBeans/Forte, then a product from www.systinet.com can be integrated into your development environment to generate most of the WSDL for you. Note that these are only two of the possibilities.
Hope this helps.
I don't see the document. Are you referring to JBoss 2.4.4 and Tomcat 4.0?