Take a look at Zend_Controller_Dispatcher_Standard#isDispatchable() http://framework.zend.com/apidoc/core/Zend_Controller/Dispatcher/Zend_Controller_Dispatcher_Standard.html#isDispatchable
This may help you accomplish what you want without using a custom route. If this works, you'll probably want to put it in a controller plugin's routeShutdown() hook. -- *Hector Virgen* Sr. Web Developer http://www.virgentech.com