Help with a mod.

[just_some_guy]

Hello,

I am thinking of creating a mod.

About the mod:

Basically when you upload an image to change the thumbnail of a file (ex a .zip)  it will also upload the non-resized file to another location aswell as inserting a the location into the database. Then the will be a text link below the file "click for larger image". And you will be able to view the file that was uploaded when the the tumbnail was changed.

Simple in theory... I know the coding its just where do i input the code?

I know i need to edit.

displayimage.php
and
changeThumb.php

Where abouts do i add the code to changeTumb.php? it needs to serve the same purpose as before by uploading the file which is resized. But also upload the original file.

Thanks!

[just_some_guy]

Anyone?