To access the Editor First you will need to have a Copy of FFoW (THIS HAS BEEN TESTED ON THE STEAM RELEASE, UNKNOWN IF IT WILL WORK ON CD), First go to your FFoW .exe Directory which should be: "C:\Program Files (x86)\Steam\steamapps\common\Frontlines Fuel of War\Binaries" In there find a .exe that says "FFOW"Right-Click to make a shortcut to your Desktop
In your Desktop, Right-Click to go to it's Properties, In there copy the text shown below:
"C:\Program Files (x86)\Steam\steamapps\common\Frontlines Fuel of War\Binaries\FFOW.exe" editor
After you've done that, Apply the changes to the Shortcut.

Your splash should like this when you open the Game, If you don't see this splash and see the Normal one then you might want to check your Shortcut Target.