This is the Launch Complex 39 A and B High detail version 9(High Polygon Count)...Not For Low End Computers...You need to install the Orbiter Shuttle Fleet 3.9.2 before you install this add-on...New in ver 9 (Made compatible with new Orbiter 2006SP1 and SF 3.9.2) Press F3 to Select the RSS,Gangway or Fuel Cap, then press G to Rotate them each seperately....NB (You need to restart Orbiter after each Scenario else it will crash).. Uses Vinka's Spacecraft2.DLL.(included)..