send messages to a subscriber and wait for acknowledgement

Hi,

I'm trying to get the following behavior out of jms. I publish a message 
to a topic, then I wait until I receive back the acknowledgement that 
the message was properly delivered. In other words, i would like to 
develer a message in a synchronous manner to a topic. Any pointers of 
how i could do this?


Thank you in advance,


Octav