yii backend panel main. php help

Yii 1.1 General Discussion
1

I am creating a web app of two interfaces, front end and back end

http://www.yiiframework.com/wiki/33/organize-directories-for-applications-with-front-end-and-back-end

please do help me what is content of file having

protected/backend/config/main.php

please share this file , because its showing error when i open backend.php

Thank You

2

if i create admin as module via gii, how do i make different access for different user types, please someone can elaborate…??? i am totally new all this coding

3

i also want to ask that, how do we start, firstly we create schema, then model via gii and then setup rbac and then at last the admin module… sorry about silly questions, i am totally beginner