Attached Link: http://orbiter.dansteph.com/

Also really interesting is the FREEWARE Orbiter software program- originally designed to be a Space Simulator for NASA Shuttle flights, it has been expanded by add-ons to support all kinds of spacecraft, planets, space stations, etc. The renders in Orbiter also also extremely good when you download the add-on packs. It would seem that by importing your favorite POSER or DAZ Sci-Fi models you could actually fly them around and control them in REAL TIME! Wouldn't THAT be fun?