   D9 Point light is not supported on vista??
  hi:  There is a demo. But when i get it run on vista, all of the things turn out to be white, i change the light type to directional , the color returns.  But i want point light, not directional.  What's under the hood??  Thanks!!   
  Yes, is supported. There's a little code in slimdx.SlimDX.Vector3 vv3;this.Device.EnableLight(0, true); //enable lightSlimDX.Direct3D9.Light light = new SlimDX.Direct3D9.Light();light.Ambient = Color.Gray;light.Diffuse = System.Drawing.Color.White;vv3 = this.Player.Position; vv3.Y += 0.5f;  light.Position = vv3;light.Range = 5;light.Type = SlimDX.Direct3D9.LightType.Point;this.Device.SetLight(0, luz);