[tydeas_dr]

Hello, I want to create an Extension Controller to have some defaults action all.
I assume i create a dir under the extensions/mycontroller/
In file Mycontroller.php i do:

class MyController extend CExtController {
    public function actionDefault() {
        ......
        $foo=new Foo();
        ......
    }
}

Now the question i have are. Should the the functions be protected or public ?
If i want to have my extension controller independent from the model how can i do this.I mean in the actionDefault instead of Foo() and general when i need something like Foo::model() what can i use instead of it?
Last but not least.
How can then use the CExtController to be extending some controllers under Controller? should i use somethign like require_once?