If anyone is interested, I've been able to solve the issue using routes:
PHP Code:
$router = $front->getRouter();
$router->addRoute(
'default',
new Zend_Controller_Router_Route('*', array(
'controller' => 'index',
'action' => 'index')));
$router = $front->getRouter();
$router->addRoute(
'admin',
new Zend_Controller_Router_Route('admin/:controller/:action/*', array(
'module' => 'administration',
'controller' => 'index',
'action' => 'index')));
Not sure if this is the best approach since I'm new to Zend Framework ... but it works

. Thanks for the replies.