Subfolder doesn't work

[eluser]fnoorman[/eluser]
Hi,
I've tried to create subfolder in the application/controller folder and also create a controller file named login.php e.g application/controller/admin/login, then according to documentation, this should work with "http://mynoki.com/admin/login" rite? but it keep gives me an error 404? i've use .htaccess to remove index.php in the url and it still gives me error.

Please shed some light