Start at http://localhost:8080/jbossws. On that page, in the Runtime Information box there is a "View a list of deployed services" link. Click that, you will get a page of registered services. Is you service on that page? If not, then your app was not recognized as a web service.
IMHO it will be related to JBWS-2699.
Please upgrade to JBossAS 5x series and upgrade to JBossWS 3.2.0 (or JBossWS 3.2.1 comming out these days)
thanks! it seems it is question of incompatible versions! it was tutorial with examples for JBoss 4.0 with examples. i used JBoss 5.0 and JDK 1.5. So webservices.xml file and classes don't work fully for 5.0 version. In JMX console the webservice is registered and shown, but under name of EJB Bean instead of name of web service from webservices.xml (url must be changed). Running of web service -client doesn't work so also. Incompatibility between versions is sometimes impressionable! must try upgrade!