1.3.8 zonetable to 1.3.9 after upgrade, struggling

Hi, all, i searched and it seems like i am the only one having a problem with this.
I have managed upgrade to 1.3.9 locally, carried out all the mods, and am quite happy with it.
What i am trying to do is make the changes to my shipping module.

I am using winmerge to spot the changes compared to the original, but i am unsure how to proceed.
Do i print out the whole thing and go through it line by line?:frusty:
Do i find similar statements and amend them?

Basically i need some help here, please?
Can someone break it down for me, please?

Thanks, as always

Soul39

I just wanted to inform there are also instructions for this in the installation package of v.139 (if you didn't already know)..

Hi, Soniccc, i have read the upgrade instrustions and i am still puzzled.
Is the zonetable an add on? If it is, that is where i am going wrong.
DAMM!
I thought that all what was required was to make the changes to
the TABLE in the shipping module and call it ZONETABLE.

Right, more thinking to do.

Soul39