Urgent Simple X-Cart Problem

We are in need of someone that can quickly give us detailed instructions on how to find and edit the languages txt_shipping_details_body found within X-Cart. We need to be able to insert our shipping details in this area. See the link below at the bottom for an exmaple: [login to view URL] To acess that URL that information is: User: admin Password: 23pet We need a detailed description of how you find this file to edit. That is what we are paying for is your X-Cart knowledge. Only bid if you can help us find where to edit this. Thank you for your time. We will not pay more than $30.