How do I setup Gravity Forms so Wordpress uses that user registration form?

I have setup the form,
set up the user registration and linked them.

I went through the forumn here but don't see any real answer or step by step answers.
It still uses the Wordpress login...which is strange for a 'plugin' So, now what's next?

I read this in the documentation, and then there is nothing more to configure?

Setup a User Registration Feed
1.Click on the User Registration navigation item on the Forms menu.
2.Click on the “Add New” button to add a new User Registration Feed.
3.Select the Gravity Form you would like to integrate with.
4.Map the User Registration Fields to your available Form Fields. This is used to populate the user registration fields with the appropriate form fields when the form is submitted. For more information on available User Registration fields see #Standard Fields and #User Meta Fields.
5.Under Additional Options, use the Send Email? option to specify whether you would like to send the password to the new user by email. This option is enabled by default.
6.If desired, specify a Registration Condition. A Registration Condition allows you to conditionally register a user when the specified condition is met.

I tried but find it tricky Pls can someone make short video explaining how to do this

Carl, I set up my custom user registration according to your instructions and it works perfectly. It took me a while to find this post though. It would be great if you could add your instructions to the User Registration Add-On documentation.

By the way, I have a tutorial up at http://wordpresstutorials.normfields.com that goes through the process of installing Gravity Forms and setting a simple contact page. I'll probably be doing an update to it to cover your instructions above for the User Registration Add-On.

Thanks for a great plugin!