HaloMods "Classic" Read-only Archive

I play paintball and love halo. I am trying to get a game set up in halo that would represent a paintball match. Like: Slowing down shots adding arch to shots making the projectiles like plasma shots (one shot one kill) having different guns represent different paintball guns ( all in halo cash edit...

I have just downloaded the halo 2 UI from the fourm and I am wondering how I can get this to work ?
What file do I need to put this over or patch and how can i make it permanent?