How do I pick up a response from an MSMQ?

I want to read the body of the message from MSMQ sent from JDE Enterprise One.  I have no idea what XmlMessageFormatter is.  How do I read the unknown formatter message body from MSMQ?  I tried "System.String".  It didn't work.

I am able to get the message from the queue just fine, and read the message id, but how do I read the body/contents of the message.

There is an error message of:
Cannot deserialize the message passed as an argument. Cannot recognize the serialization format.
on line:
strMsg = msg.Body.ToString

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Dim strQueuePath As String = ".\private$\mytestqueue"        
        Dim q As New MessageQueue(strQueuePath)
        Dim msg As New System.Messaging.Message
        Dim strFormatter As New System.Messaging.XmlMessageFormatter(New String() {"System.String"})
                
        msg = q.Peek
 
        msg.Formatter = strFormatter
        Dim strMsg As String = ""            
          
        strMsg = msg.Body.ToString