I ended up struggling to figure this out just today, so I feel your pain! In your File Explorer, you should be able to go to C:/Program Files (x86)/PlayOnline/SquareEnix/FINAL FANTASY XI/ and then to either ToolsEU or ToolsUS (based on your region), and there's a file there called FFXiPadConfig.exe that should be able to get your controller set up. FYI, if you hadn't been in that folder yet, I would recommend also running "FINAL FANTASY XI Config.exe" and adjusting your resolution and effect settings there (then, in the actual game, you can adjust Aspect Ratio further to get everything straightened out). Hope this helped!