For a MintChocolate store I was asked to add one additional delivery option: Shipping with tracking code. I have looked for a free extension with such functionality but wasn't able to find a proper one. So I've decided to create such extension. Now, we are using weight based delivery, so I just copied existing shipping option and modified it based on our requirements. To create new shipping method you can copy following files:  \admin\language\english\shipping\<name>.php \admin\controller\...