Need shaders for real flight 6 simulator

Hmmmm, it sounds like you have an old computer. Real Flight 6 (now on version 6.5) uses DirectX 9 (Shader Model 2.0). DirectX 9.0 has been around for a long time and older cards that are compliant with it can be found used for very cheap. New cards also support DirectX 9. But you need to list your computer's specs so we can see what cards your computer can use.