Admin Category Filter Sort Order

Modify the category select box on the app\code\core\Mage\Adminhtml\Block\Sales\Order\Create\Search\[login to view URL] column to be ordered by the category order in the menu instead of by category id. We would like the select box to show the categories as they appear in the category tree, with subcategories beneath parent categories. Subcategories should be indented to distinguish between subcategories and parent categories.