Kamelite:
The Material (Surface in AC17) settings are different between the 3D Window and Rendering, at the top of the Material Settings dialog box is the Engine Settings, so you must alter the OpenGL and LightWorks settings to match (there is a
Match with Internal Engine under LightWorks, so that can be a good starting point).
The lighting methodology is just different between the two (LightWorks can use Lamps, has better shadows, etc), so you will need to tweak the LightWorks Sun, Lamp, etc settings to get the desired effect.
David