CakePHP Controller error

CakePHP Controller error

Hi I am an absolute beginner for cakephp. I have created a controller
names tasksController according to cake naming conventions as tasks is my
table name in the database.I have put index action in this controller but
i run this in browser, I get this error,
Missing Controller
Error: TasksController could not be found.
Error: Create the class TasksController below in file:
app\Controller\TasksController.php
}
I am quite new so don't know how to fix this problem. I am using cakephp
2.4.0.
Please help me in this.