On American Express Network I saw this:
Author: sunny
Magento – Multiple Tablerate (end)
This is the last chapter for adding multiple tablerate to Magento system. Now we need to add to our admin panel, so we can edit it.
We need to add two new files (they are duplicated from the original tablerate module):
\app\code\core\Mage\Adminhtml\Model\System\Config\Backend\Shipping\Tablerate(n).php
\app\code\core\Mage\Adminhtml\Model\System\Config\Source\Shipping\Tablerate(n).php
Magento – Multiple Tablerate (2)
Continue for adding your own Multiple Tablerate:
Duplicate from
app\code\core\Mage\Shipping\Model\Mysql4\Carrier\Tablerate.php
app\code\core\Mage\Shipping\Model\Mysql4\Carrier\Tablerate\Collection.php
to
app\code\core\Mage\Shipping\Model\Mysql4\Carrier\Tablerate3.php or (Tablerate(n).php)
app\code\core\Mage\Shipping\Model\Mysql4\Carrier\Tablerate3\Collection.php or (Tablerate(n)\Collection.php)
(more…)
