Create new regions with Context UI and Context Layout

Hi,

I'm trying to use the Context Layout module to create a layout for the package content type.
The end of this video show the kind of thing I would like to do : http://developmentseed.org/blog/2009/nov/20/admin-rubik-improved-ui-drup...
I have changed the info file of my sub theme to create a new region, this link explains how to do this : http://drupalcode.org/viewvc/drupal/contributions/modules/context/contex...

I also have created a php file for the layout where I put :

But this doesn't display the new region when I choose a context and the layout I've created. The block doesn't seem to exist at all. So I've continued on searching...

This discussion speak about adding this code in the template.php file : function themeName_preprocess_node(&$vars, $hook) { $vars['custom_region'] = theme('blocks', 'custom_region');}
What I did with no results... And php coding is a domain that I don't manage at all.
I would be happy if someone could help configuring new regions with the Context Layout module. And perhaps more people are interested too.

Thanx