Reversed textures on conversion

[Smakkohooves]

I recently have ripped few models from a game, but when i open it i notice that the texture is reversed...
The texture is inside the model, and the model is grey from outside....
I don't know how i can fix this problem
Anyone can help me? I have to reverse inside-out the surface of the textures, but i even don't know how is called this action...

I usually use AC3D , i have poor pratice with blender...
I can try also through other 3D related programs

[Friedslick6]

The term is inverted normals. You need to flip the normals outward, and enable backface culling if both sides need to be rendered.
The hotkey for recalculating normals in Blender is Ctrl+N. If there are still tris facing inward, select them and then press W > F to flip those tris outward.

[Smakkohooves]

The term is inverted normals. You need to flip the normals outward, and enable backface culling if both sides need to be rendered.
The hotkey for recalculating normals in Blender is Ctrl+N. If there are still tris facing inward, select them and then press W > F to flip those tris outward.

I'll try that