Whats Does this thing do:
Allows you to:
Run Radiosity
Compile Jms files to scenarios
Write your Own Scripts in it
Compile Bitmaps
Compile Models
Compile Collision Geometry
Compile ANimations
Compile Physics
Also it allows you to compile your map to play in ce
Other Features
Runs Sapien, Guerilla, And Halo Ce from the Launcher (that is included)

Download
http://files.filefront.com/Custom+Editi ... einfo.html