do I need to seperate admin and user area phsically in my file structure ??

hii guys!!

m new to rails. I am about to create a simple CMS application . Do i
need to put my files in seperate folders ?? If doing so how to follow
rails convention. I am using scaffold to create my admin end . do I
need to change my style...I mean do I need to write them on my own ??.

Let me explain my problem with example
suppose I need a table called contain & I use scaffold to generate it
table name: Content

now all files called content_controller.rb , a view folder called
contents & a model called content.rb

The above description is completely fine and good for admin.

know I need user end ....what I am doing is creating a controller name
user and writing action in it . User dont have any model assosiated
with it . I will be specify in controller which model to use .

DO YOU GUYS HAVE BETTER APPROCH THEN WHAT I FOLLOW ..... ???

THANKS

I prefer to have separate admin controllers with at the top a
before_filter :require_admin to be safe.