Web service is technology not a tools that bundle with IDE.
For example you can't say how can I develope object orented program with Eclipse.
1- You should get some general info about SOAP, WSDL and Web sevice usage
2- Start to implmenet a simple Hello world web service and deploy it on application(web service) server
3- Write Client code and test it.
for step 2,3 Apache Axis(2) could be a good solution for developement or you can use JAX-WS for sun