Some tips:
Extract the textures from the DEMO data.pbo (demo sometimes used different textures compared to the normal ofp) then look at the model in o2 to see which textures are used, redirect via o2 (edit the texture path in the faces window, right down at the bottom, so it points to your texture).
PS use ctrl double click on a texture in the texture window to see what surfaces it is applied to. You can also use the background to face feature to see how the texture is oriented.
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