   Extensions
  Apart from including glext.h, do I need to link something to use extensions? I ran thisprintf("%s",glGetString(GL_EXTENSIONS));and it gave me "(null)"   
  I guess glGetString encountered an error - use glGetError to find out what it was. Remember that you need an OpenGL context to call glGetString (i.e. open and initialize the window first, then call glGetString.)   