When you say you don't know how to modify that file are you saying you don't know how to open it or what to put in there?
To open do the following in a gnome-terminal window sudo gedit /etc/snes9x/snes9x.conf -- feisty joystick problem https://launchpad.net/bugs/84767 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
