maybe im retarded for asking this but i ahve been wondering this for quite sometime now, because people are so excited about Doom3 new graphics that are openGL, and yet they are also so excited about the new directx9 features that are on the radeon9700. What is the difference between OpenGL and Directx? they both run off the same cards and i cant notice a difference so is there such a large difference that i am missing or what?