pulling data from database

ive added a tracking module which emails the client a tracking no apon shipping.

what im trying to do is add it to the order_info.tpl



can anyone advise me how i do this,

im guessing i will need to edit the order.php to add a function, but im not 100% sure and any help/advice would be great.

Thanks In Advance.

It depends on tarcking module. You will need to check where this module stores tracking data and then put that data in controller and template. Suppose you will need more professional help you not knows php and opencart