How to identify a particular queue

Hello all.

I am implementing a simulation where I am using a custom queue type, which
is actually an array of queues. If I use the standard queue-monitor
command, it provides me overall statistics of the main queue, but I would
like to collect statistics about the occupation of the individual queues of
that array.

Is there any way to overload the QueueMonitor to do this? Or, how could I
identify the queue within the C++ code in order to instrument it with
simple printf commands to generate the statistics?

Thanks in advance for your help.

-- 
Sergio Gutiérrez