When I was trying to use it I got some error such as other shipping options were not shown/worked and there was no option to integrate it with Onepage checkout addons (http://addons.oscommerce.com/info/6646).

I have changed two files in classes directory.

1. shipping.php
2. onepage_checkout.php (you have to add this file if you use onepage checkout contribution).

Other files are remaining same for both of the addons.

2 files uploaded.

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