Is there a How-To for SOAP remoting?

Most of the readings I came across deal with new projects, and we're not starting one, but we need to export a few SOAP services.

Also most of the readings require severe modifications, additional servlets, etc.

I am looking for a Spring-MVC compatible solution similar to the o.s.remoting.httpinvoker.HttpInvokerServiceExporte r.

We have a Maven 1 + Spring 2.5 + Hibernate 3 modular project. Until now HttpInvoker was sufficient. Now we have a 3rd party system, that needs to call via SOAP requests.