HaloMods "Classic" Read-only Archive

I really need help applying mods. I got the HALO 2 mod and want to use it. I unzip it with WinRAR and I don't know how to get it to work. A little help??

Its not really that hard. What you should do is go to files.halomods.com (i think thats the mods forum) and get the Helpful-Halo-Hacking-Tool(HHHT)