[asheshouse]

You need map C Tools -- look in the tools section.
The tools read map_c.tga and map_c.tga_table to create a normal greyscale image

Three tools:

Compose
Disect
Transform

Map_F is just an image file which in "Excellent" mode is laid down on the landscape in the distance.
Its not used in "Perfect" mode
It needs to be a 24bit colour tga format

Paint it as nice as you can to be a low-res representation of the overall map.
Some people start by converting the map_T to map_F, assigning different colours to each pixel.
Overlay a scaled down version of MWmap_c to get the river/water surfaces.
The map edge needs to have a simple plain texture to stop the stripes you see running off into the distance.