thoes programms are good to use& yes if you dont know blender then blender might be pretty hard to get used to but you might get it work quick. other than that you use
Load Object "test.x",1
or
Load Object "test.3ds",1
the ,1 means that its serrial number is 1 so when you load a image as the texture you use that like this
Load Image "Texture.bmp",1
Texture Object 1,1 and in DarkBasic pro it whud look like this
Load Object "test.x",1
Load Image "Texture.bmp",1
Texture Object 1,1
Where Test.x is your 3d modell& Texture.bmp is the image you use as texture on the modell.
i hope this helps alsoe chekk darkbasic pro help option then commands and basic 3D and youl see alott of info there too

ps Norwegian&dyseleksia.
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