Multi Level controller not working

[eluser]jaswinder_rana[/eluser]
My structure for my controller is

application/controllers/admincp/config/countries.php

It's not working when I try to access it like http://localhost/index.php/admincp/config/countries. I am getting 404 message.

If I copy that same file and put it in admincp folder (application/controllers/admincp/countries.php), it works. So my syntax is correct but it's not letting me put controller in snd level.

Am I doing something wrong?

Thanks