if its the furniture, and consoles that you are looking for
then i suggest downloading the Olympus bridge mesh thats on this site,
it has the consoles and chairs
as far as the warp core there is one also on this site as the enterprise engineering
also there is a promethus class bridge available in a poser formathttp://www.xcalpro.com/
there are star trek props available athttp://www.3dgladiators.com/
its sets like what i posted in the images that you want
all you have to do is make some planes and put textures on them
recommend that you do not use these sim2 sets
for any sort of fan film because you might get laughed at
for the level of desperation
if you want something better than the sims2 backgrounds try searching for some images for blue screening your actors inhttp://www.ex-astris-scientia.org/
these sites have a ton of images of sets and screen caps, where with basic photoshop skills
you can remove the actors, and have blank images!
otherwise you could take these and use them as references to make your own mesh
with everything you need.
if you are willing to pay
there are some extremely low detailed sets in the poser format athttp://www.vanishingpoint.biz/
but they are extremely low detailed, as in none at all but better than sims2 and extremely high price
also another suggestion that i can make, for a bridge
is to download blender
get the .nif format importer
and then at bcfiles.com download the generations bridge model,
and import it into blender using the .nif format importer
but you'll need to manually add the textures
which would require basic blender skills!
and if you feel that they are not as detailed as you want,
you can cannibalize meshes from the before mentioned Olympus bridge!
This is basically as far as we can go, cause we have basically covered every angle of a topic that has been basically started three times in the past week, and even more so going further into the forums past
good luck and goodnight