Squeak...I am not George or DanO but Regarding Midi Cables, you will need 2. One to record PC to keyboard & one to play back PC to Keyboard. They can be obtained from most Music Hardware shops. You will also require a Joystick splitter adaptor which has a fly lead to continue to connect a Joy stick.
For information to you and others reading this, if you decided to upgrade your PC OS to Windows XP. Yamaha XG Works will not run.
Graham