Hey Vamp, welcome to the forums. As Apple Slicer mentioned, when you have a light selected in the editor and are ready to place it, you can press the [ ] symbols on your keyboard to change the size (and thereby intensity) of the light. The smaller the light, the lower it's intensity. If you think the light is too dark, you can add several small lights around each other, or place them above and below each other (page up and page down lower the light). The more lights you add the more realistic your lighting will turn out (though sometimes a few lights, or even one will do the job).
Static lights (red outline in the editor) cast realistic shadows, whereas dynamic lights (green outline in the editor) do not (at least not in FPS Creator). Personally, I stick with static lights to have realistic shadows cast in the level. It also saves frame rates opposed to filling your game with dynamic lights.
The difference from static lights and dynamic lights (I don't know how much you know already), is that static lights are 'baked' into the level while the game is building. Dynamic lights are not; they are always active, and allow the player to interact with them. A few examples being flickering lights, or turning a dynamic light on and off in the game with the flick of a light switch. This you cannot do with static lights.
Just remember, good lighting can make a bad level look good, but bad lighting can make a good level look bad. Lighting shouldn't be half...well I can't say that here. I'll just say that I spend about as much time with lighting as I do setting up all of the entities in my levels. Hope this helps. Good luck.
-Kravenwolf
Success is not final--failure is not eternal.
