This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
Which API are you using to create the Web Service. All most all the API's gives their own task to create the Client jars from the WSDL file. So create the Jar file from the ant task and use the classes in the Jar.