The MSMQ MP has been officially released by Microsoft: http://www.microsoft.com/downloads/details.aspx?FamilyID=1d2b4398-8bc2-4a43-850c-852ebb0d983b&DisplayLang=en

 Overview

Message Queuing (also known as MSMQ) is a server application that enables applications to communicate across heterogeneous networks and systems that may be temporarily offline or otherwise inaccessible. Instead of an application communicating with a service on another computer, it sends its information to Message Queuing, which sends the information to a Message Queuing service on the target computer where it is made available to the other application. Message Queuing provides guaranteed delivery, efficient routing, security, and priority based messaging.
Feature Summary
The Message Queuing Management Pack provides monitoring for the following:

  • MSMQ Servers
  • MSMQ Triggers
  • MSMQ Queues
  • Dependant Clients