I'm not sure that the plateox.tga or steelplt.jpg maps would work for an interior. On a Star Trek interior, the surfaces are mostly smooth, especialy on a federation ship, with not hint of paneling.
With regards to bump mapping, in most cases, there should be none, but some interiors (Enterprise B bridge, for example) have surface that look like the were sprayed with paint, leaving a rough looking speckled kind of surface. Those types of objects should have simple noise displacement shaders (with a fairly high frequency, low amplitude) applied.
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