HaloMods "Classic" Read-only Archive

I recently download two different main menu editors to add maps to my HDD version of Halo 2. I put on it the dawn of war mod. It shows up on the list (the picture is Zanzibar though) and it wont load. I have even put the shared.map and dawnofwar.map into my maps folder. Why isnt it working.

Map number thing is set on 1 or 2