create an action, ie: actionAbout() and choose what to display:
public function actionAbout()
{
// this will display /views/about/aboutFile.php
$this->render('aboutFile');
// or maybe just give a path to any file
$this->render('../otherView/someFile.php');
// or do anything with the view output
mail('admin@domain.com', 'email', $this->render('about',null,true));
}