Change Order Confirmation Email for Free Shipping

Sorry, but I searched and searched for an existing thread on this..

For whatever reason my customer decided to use the FREE SHIPPING module for items that required Freight Delivery. I assume they didn't want to deal with a rate schedule. Anyway, they added freight delivery information to each product description on the few products that are too heavy to ship UPS.

They tweaked the freeshipper.php file to display "Freight Shipping" rather than "Free Shipping" and included a hyperlink to pop-up their standard speal about how the freight is going to be handled.

The problem is when the customer receives his order confirmation via email it looks like this..

Sub-Total: $882.00
FREE SHIPPING! (Free Shipping Only): $0.00
Total: $882.00

Ideally I'd like to change that FREE SHIPING line to read FREIGHT instead and be a hyperlink to the webpage that describes the freight. But I'd even settle for just changing the wording. For the life of me I can't find it anywhere.

I've used the developers toolkit to search and not found it.

They are on Zen Cart 1.2.4.1

Any clues would be appreciated.