[fw-mvc] ZF 1.8.1 MVC configuration

Greetings,

Has anyone a simple working example using 2 modules in ZF 1.8.1 ?
I'm stuck not knowing what I need to set to make it work.

My application folder looks like this:

application
| Bootstrap.php
|
+---configs
| application.ini
|
\---modules
+---admin
| +---controllers
| | IndexController.php
| |
| +---models
| \---views
| +---filters
| +---helpers
| \---scripts
| \---index
| index.phtml
|
\---default
+---controllers
| ErrorController.php
| IndexController.php
|
+---models
\---views
+---filters
+---helpers
\---scripts
+---error
| error.phtml
|
\---index
index.phtml

The content of application.ini is:

[production]
phpSettings.display_startup_errors = 0
phpSettings.display_errors = 0
includePaths.library = APPLICATION_PATH "/../library"
bootstrap.path = APPLICATION_PATH "/Bootstrap.php"
bootstrap.class = "Bootstrap"
resources.frontController.moduleDirectory = APPLICATION_PATH "/modules"
resources.frontController.defaultModule = "default"
;resources.frontController.controllerDirectory = APPLICATION_PATH "/controllers"

[staging : production]

[testing : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1

[development : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1

and the rest of the files contents are the same as generated by Zend
Tool command line.

I changed the folder structure a bit, hopping that it may work, but
seems that I cannot access any other module except the default one.

When I try to access:
http://localhost/dragos/public/admin

I get the following error:

An error occurred
Page not found
Exception information:

Message: Invalid controller class ("Admin_IndexController")
Stack trace:

#0 C:\xampp\htdocs\dragos\library\Zend\Controller\Dispatcher\Standard.php(255):
Zend_Controller_Dispatcher_Standard->loadClass('IndexController')
#1 C:\xampp\htdocs\dragos\library\Zend\Controller\Front.php(936):
Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http),
Object(Zend_Controller_Response_Http))
#2 C:\xampp\htdocs\dragos\library\Zend\Application\Bootstrap\Bootstrap.php(77):
Zend_Controller_Front->dispatch()
#3 C:\xampp\htdocs\dragos\library\Zend\Application.php(328):
Zend_Application_Bootstrap_Bootstrap->run()
#4 C:\xampp\htdocs\dragos\public\index.php(26): Zend_Application->run()
#5 {main}

Request Parameters:

array(3) {
["module"]=>
string(5) "admin"
["controller"]=>
string(5) "index"
["action"]=>
string(5) "index"
}