it would be a bummer if daz would reject it because it used inferior poser lighting. my suggestion would be to render it in something like maya, max, lightwave, c4d, carrara, et al. or else read up on HDRI/AO and GI in poser. the latter is one of the hidden features of P7. maybe they're looking for a good render using their in-house software (D S). I dunno if d s has any advanced lighting features.