Need help with Blender texturing

I have a few airport ground traffic 3d models which I can export to .obj 
in order to import them into Blender and then save the final result as 
.ac format, in order to get it into FGFS.

I have a problem with textures which are not imported into Blender. 
Cololerd materials assigned to faces are correctly imported, that's not 
a problem, the textures miss totally.

I really don't know Blender so I feel a little lost. Is there someone 
out there who has some spare time to point me in the right direction in 
order to get those models look nice? I prefer using textures for getting 
nice visual results and enrich the model with details instead of using 
high-poly models, so I hope I get that done before going on with 
building more (mostly not satisfying) ground traffic vehicles.

.ac files are to be found at http://www.geocities.com/robitabu/
I can provide .obj files too.

   Cheers,
     Roberto



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