Is anyone using this with PMDG's 747-400 for FSX. I cannot get it to recognise and operate the 747's autopilot. There shoud be a file called 747400kbd.ini but I don't have it. How is that obtained?

I have successfully used it for some years with PMDG's 737 on FS9, but I just can't work out why it's not seeing the 747 in FSX. Other aircraft work with it in FSX. Puzzled!