Quote:

3ds imports never show up with skins


they do. textures have to be in bmp or tga format, must be square (e.g. 256x256), file names must not be longer than 8 characters and contain no special chars, the folder containing the picture files must not be moved after exporting.
as already said, neither wings3d, nor cinema4d not milkshape trouble the 6.4 Med, even all textures in multi texture models are included. things that can happen with 3ds export is the destruction of the mesh surface, sometimes all faces will be treated as individual ones, you have to re-weld them. on spherical objects, texture distortions appear from time to time, so use *.x for them.