sort new products by date added

Problem: New Products are sorting alphabetically instead of by date added. How do you list by date added without affecting category product listing sort settings?

File: catalog/products_new.php

Line 103 
$sort_column = 'PRODUCT_LIST_NAME';

Replace with
$sort_column = 'LAST ADDED';

Line 110
$sort_order = 'a';

Replace with
$sort_order = 'd';

Line 136
case 'PRODUCT_LIST_PRICE':
      $listing_sql .= " order by final_price " . ($sort_order == 'd' ? 'desc' : '') . ", pd.products_name";
      break;
  }

After, add this
case 'LAST ADDED':
      $listing_sql .= " order by p.products_date_added " . ($sort_order == 'd' ? 'desc' : '');
      break;
  }

The New Products page will now list the most recent products starting at the top of the page.