HaloMods "Classic" Read-only Archive

when i try to start up that retainment mod, that was the mod of the month, it says failed to load the map. so then i noticed he said it had to be under the halo maps folder, not t-data. i have no idea what a halo maps folder is or could somebody just plz tell me how to apply it correctly

Copy halo to your cpu, take off the single player maps, FTP to your box, and replace the maps like you do with t-data.

P.S. Always back stuff up.