Every map consists of 4 files:
dsc = Description (server side)
mis = Mission (server side)
ted = Terrain Elevation Detail (client side)
vol or zip = Archive (client side)
If you have 1.40, your missions folder should contain a bunch of zip files, in addition to the other 3, but if you have an older version of Tribes, your mission folder should contain vol files instead of zip files.
If you are hosting, you need all 4 files for each map (some maps share terrain and archives).
If you are playing, you only need the client side versions of the maps.
