X200's right - while one big ship would look cool. Poser couldn't handle that much info. Look at the loading time and filesize of a simple V3 scene with 1 V3, some decent hair and a couple of buildings and vehicles. Somtimes you're looking at over 100mb. Though you could cheat a bit, use something like JHoagland's Cygnus ship render that out and use it as a background and animate or render over that.

Pinky - you left the lens cap of your mind on again.