I need to put messages into a queue from within a Zclass, and then get and process them from an external long running process. I have created a class which imports a derivative of queue, the class instantiates a queue as a class object. The idea is that the queue will use a persistent object for the queue (list), and then some external process can also use the same object(list) in its queue processing. Both the zclasses that inherit from this queue and the external process must use the same mutexes... Questions: 1 Should the queue.queue object be made persistent or should we instantiate it with an external list which is the persistent object. Can either of these be done an how. 2. Assuming we can do something like the above what are the considerations wrt package distribution. Max Slimmer Solutions Architect eMail: Max.Slimmer@veritas.com Service Development - ECS Office:(707)829-2450 VERITAS Software Inc. Cell: (707)280-9299