Threads and Transaction.

Hi Guys
I am stuck in the following scenario.Please advice me on this

There is an inbound Queue
There is an Main thread running(We are not using JMS Listener )
and picking a message from the queue and process the message
and start another sub thread to process again.

Now the problem is How can i handle the transaction in the main thread and sub thread as well.
which mean when i process the message in main thread say some Data Base access error occurs
so i want to rollback the message back to inbound Queue.
and if the same failure occurs in sub thread which was created by the main thread, the retrieved message should rollback to inbound Queue.

I have walked through the JMS Spring Reference ,But they are demarcate the transaction only to JMS Listeners
So How can i apply the transaction concept in my scenario
Please advice me ,If you have any sample program please share with me .That would be better to understand your concepts

Thanks and Regards
Dominic
Junior Developer