because alpha textured models are handled in an ugly way in 3dgs. set OVERLAY flag for them, or use a simple fx (you can find it in the Wiki if it is online, as improved overlay) by adding these lines to a MATERIAL definition:

Code:
effect =			
	  "										
	    technique alpha_test
	    {
	      pass p0
	      {
	        zWriteEnable = true;
	        alphaTestEnable = true;
	        alphaBlendEnable = false;
	      }
	    }
	  ";

Free world editor for 3D Gamestudio: MapBuilder Editor