I''d like to suggest a change for the OS X setup of OpenGL in the NeHe tutorial. By choosing Cocoa Application, what I have found, is that Project Builder puts some stuff in your project that not only isn''t used, but causes errors without fishing them out and getting rid of them. Here is how I do it, I am a bit of a purist: After opening project builder, File->New Project (here you choose the Empty Project option) After the IDE opens, Project->New Target (here you choose Cocoa Application, then you name the target) Note, that it is important to add the target before you add any files to your workspace. The rest of the instructions are similar to the existing tutorial. Project->Add Framework (choose GLUT.framework) Project->Add Files (put your source in) Ill submit some of my code to show how I set up OGL using GLUT, its similar enough to what''s already on NeHe, but I like it better.