Yes there is no way of converting those messages in to CRM 2011 whereas I can guide you through CRM 2011 “Handle” and “Route” implementation.
Message “Route” .
You have to handle this in CRM 2011 by using AddToQueueRequest Message. This will be triggered when you add Items in to the queue i.e. Activities, incidents etc.
Message “Handle” .
This needs to be done when QueueItem is getting updated Accordingly.
You have to check whether workerid has updated that means user has accepted or Assign it to another User.
Expect Comments and Concerns