[eluser]ownersbox[/eluser]
Danny, Not sure if you figured out the answer to your question but you haven't you are going to want to take the contents of the DX Auth application folder and put the individual files in their respective folder of your CI install. Also you are going to want to put your Captcha folder in the level above system.
In the routes file in config folder you can set the default controller to "auth", then if you go to your root folder you will see the login view.
Hope that helps
Pete