what do i have to modify on the tunes from the library to put on my truck? thanks

First of all, are you comfortable with the changes the person has made in their tune?

To upload a tune from the tune library to your vehicle, the best suggestion is to follow the step by step instructions Jason has created http://www.dieselplace.com/forum/showthread.php?t=194677

To understand why you can't just upload the tune from the tune library into your vehicle, you might like to read this thread http://www.dieselplace.com/forum/showthread.php?t=209856

Hope this helps

Cheers
Cindy