@ALL Maxscript must be the only solution for modding !!! Yes , isn't free, but the benefits are enormous, exemple: rotation matrix, create a 3d mesh with texture, MaxScript interface, work with mathematics functions, work with Bounding Box or Bounding Sphere, no limitation of vertices, not need traslate to Milkshape and after reconvert into .world ecc.... all these function are already implemented in MaxScript and MaxScript is more simple than Python (attention: Python is the best language infact MaxScript is made with Python but the library of maxScript is very small, only essential functions ), I dare not imagine the difficulty with Python, this is the reason because i utilized the Willdog txt export format and not the Python code of Knight Errant to understand the structure of file world....