HaloMods "Classic" Read-only Archive

Can someone pls help? I have no idea what the user above just posted.

How do I install a mod? It says in the Halo 2 mod... Installation: 1- BACK UP YOUR EXISTING MAP FILES!!!!!!!!!!!!! 2- Apply bloodgulch.ppf to your bloodgulch.map file 3- Apply sounds.ppf to your sounds.map file 4- Apply bitmaps.ppf to your bit maps.map file How do I apply .ppf to the map? I put it i...