1. A method of providing an extension to a default set of messaging resource functions in an enterprise application server, said application server having a default context factory class, said method comprising the steps of: providing a extension messaging service provider on an application server node, said extension messaging service provider having a name, description, initial context factory, and a provider universal resource locator (URL); creating one or more extension connection factories and destination resources; binding references to said extension connection factories and destination resources into a namespace; and creating extension connection factory and destination resources in an application server administration domain, such that application programs may subsequently access and use said extension messaging service provider, connection factory and destination resources by performing an indirect naming service lookup through the default context factory.