i modified inveractive_panel.ctp:

_

--- a/www/app/plugins/interactive/views/elements/interactive_panel.ctp  Wed Jun 10 11:28:16 2009 +0400
+++ b/www/app/plugins/interactive/views/elements/interactive_panel.ctp  Wed Jun 10 11:59:04 2009 +0400
@@ -1,5 +1,5 @@
<?php
-  echo $form->create('Interactive', array('url' => array('controller' => 'interactive', 'action' => 'cmd'), 'id' => 'interactive-form'));
+echo $form->create('Interactive', array('url' => array(Configure::read('Routing.admin')=>false, 'plugin'=>'interactive', 'controller' => 'interactive', 'action' => 'cmd'), 'id' => 'interactive-form'));
echo $form->input('cmd', array('type' => 'textarea', 'label' => false, 'cols' => '100'));
echo $html->image('/interactive/img/ajax-loader.gif', array('id' => 'interactive-indicator'));
echo $form->end('Execute');_

now panel works with admin routing and inside other plugins