How Unity assigns image effect shaders to their scripts automatically?

I don't understand, how it does, and I can I do it. I wrote some post processing shaders and I need them to automatically assign by script. It is really annoying if I have to remove a script because of reordering, I also need to select the shader to it. I know about "*Shader.Find*", but how should I use it? I want to auto-assign the shader as I add the image effect script component to my camera game objects (as how it works with image effects come with Unity) I'm using Unity 3.5 Pro.