[Help]How to mod

Ok, so I got the basics from DarkAngel (http://darkangelsoftware.com), and now I just need to know how to change the code part of it...there's gotta be a code part, right?
Please Help me out here.
P.S. I suck at photoshop HEHEHEHE

There's a tutorial... please take a few days to read the 200 or so words.

eh problem, i cant get any mods to work and i cant even make my own beucase rezconvet stops responding whenever i try to convert back to nexon. with the mods here i'll add a file and they just say to replace it, do that go in game and nothing changed. backing up file? doesnt work either.... when i even try to save my .DTX files photoshop stops responding, then some guy told me to use gimp.... i know that i'm a retard but it wouldnt recognize a .DTX file (as expected) could use some help