HaloMods "Classic" Read-only Archive

Ok, I love conversions of games and I have started modding for Halo, I have Milkshape, Photoshop 7, SparkEdit and Halo Modding Tools. I have made a basic shape of a weapon on Milkshape and I have modded the odd file in Halo Modding Tools i.e Changing Speed of warthog, pistol fires shells etc. But th...

Ok, I have started using this mod editor for halo, I can easily edit the files and mod the game but I want to create my own skins, create new weapons etc. But I need to know ALL the programs used, is it easy or hard and how to do it!