trying to set up my http.conf file for ruby on rails

Question

I put a folder called simple_cms in my httpdocs directory but my server won't start because my http.conf file is being written wrong how am I supposed to write it.

<VirtualHost *:80>
  ServerName www.webappcompany.com
  DocumentRoot /simple_cms/public    
  <Directory /simple_cms/public>
     AllowOverride all              
     Options -MultiViews           
  </Directory>