float lightAmbient[] = { 1.0f, 1.0f, 1.0f, 1.0f };
float lightDiffuse[] = { 0.5f, 0.5f, 0.5f, 1.0f };
float lightPosition[] = { 0.0f, 1.0f, 1.0f, 0.0f };
GL11.glLight(GL11.GL_LIGHT1, GL11.GL_AMBIENT, (FloatBuffer)temp.asFloatBuffer().put(lightAmbient).flip()); // Setup The Ambient Light
GL11.glLight(GL11.GL_LIGHT1, GL11.GL_DIFFUSE, (FloatBuffer)temp.asFloatBuffer().put(lightDiffuse).flip()); // Setup The Diffuse Light
GL11.glLight(GL11.GL_LIGHT1, GL11.GL_POSITION,(FloatBuffer)temp.asFloatBuffer().put(lightPosition).flip());
GL11.glEnable(GL11.GL_LIGHT1);
GL11.glEnable ( GL11.GL_LIGHTING ) ;
hope it helps, for a better example have a look at the lwjgl nehe tutorials, which can be found in the WIKI on lwjgl.org[/code]