poser's not really good for building scenes, but (as you prbably already no) it is the greatest program to create people with.  it has quality results but u can accomplish it with great ease.  still, setting scenes up with it really isn't what it's meant for.  i'd reccomend looking into vue from e-on software.  they import fully animated poser characters that retain all their material information, dynamic cloth, all hair.  and u can put them in some really nice environments.