Hi, Im using blender to develope Direct3d games and need to know what is the best way to create window and door holes in rooms. When I use boolean I get many unneeded triangles. Is there any way to get rid of these. I read about the Mesh Decimator in the Blender userguide but I dont see this tool in my Blender edit screen (V. 2.33a). I also tried making the windows myself by editing verticies but it is too tedious and time consuming. Can someone please tell me how to use Mesh Decimator in 2.33 or another easy way to make window and door holes in walls.