I'm doing nothing extraordinary:
1. new directx game
2. insert new object: 3d box
3. 3DBox properties: apply textures for front face and top (screen 1)
4. launch the game (screen 2)
screen 1:
<img src="http://tecbug.pl/pub/constr_box.jpg">
screen 2:
<img src="http://tecbug.pl/pub/constr_box2.jpg">