This is a step by step tutorial showing you how to do a basic lightmap for Battlefield 2.
It will show you which buttons to press in Battefield 2 editor (BF2Editor) and where to move the lightmap files to get it working in your level.
There is also a quick tutorial about shadow maps which are not lightmaps, but do affect shading.
Additional information on the LightmapAtlas.tai file has been provided in this updated version (version 2)
Well done mate!
I have a problem with lightmapping.
After this process the terrain color becoming too dark, or if terrain color is normal the palm trees shadows becoming blurry.
First problem is probably the wrong presets. You need to choose Day then Gulf_Of_Oman.
Second problem might be you have not selected Final so it is doing Low or Medium quality.