Well i will have a web service and i need to invoke it using JMS, but i don't know if this web service is different for the case, and i don't know how to invoke it. As a middleware JMS i have a Tibcom EMS server working but i don't know how to integrate it with the webservice and the webservice client
That's different. The key here is the SOAP part, where you are calling it from does not matter much, you're calling it from Java code. But you still need to figure out what webservice it really is - are you sure it is SOAP?
The API to do SOAP webservices is JAX-WS; there are many implementations, the reference implementation is called Metro. I suggest you Google that, it is not something explained in a few lines or a small piece of code; in fact it is a topic that fills a whole book. Alternatively you can use Apache Axis 2 which is quite well documented if I say so myself.