As long as all the texture references in the PP2 are in relative form, that
should be all you need.   The original folders won't matter unless the
PP2 names them specifically.

For instance, here's a material paragraph from the item I was just working on:

        material plate
                {
                KdColor 0.87451 0.996078 0.980392 1
                KaColor 0.376471 0.249412 0.161569 0
                KsColor 0.870588 0.870588 0.870588 1
                TextureColor 1 1 1 1
                NsExponent 30
                tMin 0
                tMax 0
                tExpo 0.6
                bumpStrength 1
                ksIgnoreTexture 0
                reflectThruLights 1
                reflectThruKd 0
                textureMap ":runtime:textures:DreamVillage:1950Kitchen:plate-1950.jpg"
                                0 0
                bumpMap NO_MAP
                reflectionMap NO_MAP
                transparencyMap NO_MAP
                ReflectionColor 1 1 1 1
                reflectionStrength 1
                }

If you left the prop in 'embedded geometry' form, which is how Poser creates it...
then you really don't need to include the OBJ and MTL file unless you want
to make the OBJ available to users of other 3d programs.  Poser doesn't need
them when the PP2 contains the information from the OBJ.

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