aroldo your mesh it´s very heavy, have lot a of polygons.
The better way for make a smooth model, it´s, in ACD3d I don´t know how works, but I supposse it have an option to say the angle of the polygon have to be smmothed, only for looking, not polygonal mode.
In 3D max it´s called Smooth, how I tell this make an fake effect like smooth the geometry, but this it´n not true.
About texturing the better way it´s make a Unwrap texture, I don´t know if AC3D can be do, but this it´s like cut the geometry by seams, and you have a plane texture, after paint, whit Paint, or Phothoshop or another good free soft.
A very usefull trick, it´s know the ratio between your preferred 3D soft, and the 3D camera in Glbasic, in example in 3D MAX it´s better works in the size of mm, because after in Glbasic, you forget to implement Scaling and coomands waht not ever are necessary.