midlet as EJB webservice client

Question

hello.

i have a midlet that is a client for an ejb web service. i have the following problems, my goal is to make an sms program that sends and receives sms through http.

1. when the midlet accesses the web service, i would like to find a way to later asynchronously push a message to the midlet. how can i do this?

2. can my stateless web service access a stateful session bean to keep states of clients?

if there are better approaches to my problem, please help.