How to add a div wrapper around a zone?
Adding something like this to the template.php of your subtheme should get you in the right direction.

function MYTHEME_alpha_preprocess_region(&amp;$vars) {
  $menu_object = menu_get_object();
  if (isset($menu_object-&gt;type) &amp;&amp; $vars['region'] == 'content') {
    $vars['theme_hook_suggestions'][] = 'region__content__'.$menu_object-&gt;type;
    $vars['attributes_array']['class'][] = 'region-content-'.$menu_object-&gt;type;
  }
}


Then you just need to create .tpl files for them in the same way you would for other content type based tpl files (example: region--menu--page.tpl.php)