HaloMods "Classic" Read-only Archive

hi
soz , i know this is a noob question but i searched all through the forum and couldnt find an awnser .

i open 3d max 6 up and how to i open up and edit bloodgulch for example .

thats my question please dont flame i know what to do after i done this
ant

the easy way would be too open sparkedit, and save it a a .obj file.

no luck ,

same as always , error opening file .................................

do i open the .map ones or any other one cos the .map dont work