Finally something I do not know, I got the RTW Gold edition-BI, and I read a lot of for RTW 1.2..or 1.5. How I can know what’s mine?
Start the game, go into the options screen and look in the top right hand corner, it will give you the version number there. I think some early Gold editions were 1.3 version if you have that I recommend you patch it up to 1.5 .
One thing I do not understand is how you guys do quite accurate the shape of the land maps that fits exactly in all the others .tga (regions, roughness, trade, ground types…).do you use a kind of grid, or there is a technique which I ignore??.
This is looks quite important when you do rivers or land-passes, tows..etc.
Important thing to remember is that map_heights.tga is the one that controls the coastline. Once you load your map in RTW it will generate a corrected_regions.tga in the main Rome - total war folder, you can use that one to replace your map_regions.tga as it will show the correct coastline.

the tip for generally matching up the maps is to make a spare copy of the one you want to take information from and resize it to size of other map and paste it in as a new layer, you can select areas on one and layer and then switch to other layer whilst selection is still active.

For example once you have rivers in make a copy of map_features, paste it in as new layer in map_regions, select all the rivers using magic wand and select similar, switch to the map_regions layer and you will see the river paths as a selection so you can line up the regions borders with the edge of the rivers - move cities away from ford positions etc... If you copy map_heights as a layer into map_ground_types you can select all the highest areas using the magic wand with a higher tolerance value, then switch to the ground_types layer and paint those areas with the mountain ground type. You don't have to delete 'spare' layers when you save, just make sure only the one you want is showing...

Spy I'm not sure about - there is possibly a rome shell cheat command that does that adds one or at least moves existing one but I don't know it.