[asheshouse]

Here's and example using the ag_Archangelsk map.

Unzip the download to a temporary folder on desktop.

Cut and paste the folder ag_Archangelsk from the temp folder to IL-2 Sturmovik 1946/Mods/MapMods/Maps
Copy (do not move) the file all.ini from IL-2 Sturmovik 1946/files/maps to IL-2 Sturmovik 1946/Mods/MapMods/Maps

Open your new copy of all.ini and add a four new lines of text at the bottom

ag_Archangelsk ag_Archangelsk/load.ini
ag_Archangelsk_Summer ag_Archangelsk/load_s.ini
ag_Archangelsk_Winter2 ag_Archangelsk/load_w.ini
ag_Archangelsk_Summer_def ag_Archangelsk/load_sd.ini

These define the menu selection text for the four versions of this map which appear in the drop down list in FMB.

For most maps that use standard textures and objects this is all that is required.

If the map has custom ground textures these are added to the folder IL-2 Sturmovik 1946/Mods/MapMods/Maps/_tex
--- follow the instructions in the map download.

Some maps will require new objects or buildings. Eg Canons Channel map.
The map willl not be able to be used until these objects have been added.
Any special objects required should be detailed in the readme file