Need to execute 2 test steps from the same test case in parallel.

Here is the use case
When the soap request is sent the system is suppose to talk to an external system through MQ to get the response within the time out period
In test environment the local PC acts as the external system consumes the MQ msg and does some file
manipulation based on the MQ msg and post a response and application use the msg to send the soap response

So once the request is submitted and response awaited I need to invoke a batch file which will invoke a java code to access
MQ and do the file manipulation etc