I want to create an admin controller - without having any menu items associated with it.
Ideally I want to have my controller accessible via /index.php/admin/my_controller/.
So far I have rewritten the adminhtml controller as follows but i simnply get a 404 inside the admin console (i.e. not the main 404 page):
<admin>
<routers>
<my_module>
<use>admin</use>
<args>
<module>Me_Mymodule</module>
<frontName>my_controller</frontName>
</args>
</my_module>
<adminhtml>
<args>
<modules>
<my_module after="Mage_Adminhtml">Me_Mymodule</my_module>
</modules>
</args>
</adminhtml>
</routers>
</admin>