To those who get the ‘OpenGL’ error message, firstly update your graphics card driver, hopefully you should be able to play in single player mode if not try using the Windows compatibilty mode ‘Windows XP serivce pack 2′. This worked for me, although I still could not play in multiplayer mode. To be able to play in multiplayer mode, after updating the graphics driver, right click on the drive that has the JKA disk in and click on explore, then double click on autorun.exe (NOT JediAcademy.exe) and choose multiplayer from there. To make it easier for the next time you play, create a shortcut of autorun.exe to your desktop. You should now be able to play in multiplayer mode. This is what I had to do to get JKA working on my Vista run computer, I hope it works for others too.