Try this:
mp_icehen_night.iwd\maps\mp\mp_icehen_night.gsc
PHP Code:
main()
{
setCullFog(0, 6000, .32, .33, .40, 0);
AmbientStop();
maps\mp\_load::main();
maps\mp\mp_icehen_night_fx::main();
game["allies"] = "russian";
game["axis"] = "german";
game["attackers"] = "allies";
game["defenders"] = "axis";
game["russian_soldiertype"] = "";
game["german_soldiertype"] = "";
game["german_soldiervariation"] = "";
game["layoutimage"] = "";
}