How to play Final Fantasy XI on Windows Vista?

If you upgraded to Windows Vista and tried to play Final Fantasy XI all you would get is the above error message. Styxrtp sends us a tip that he fixed the problem by creating a patch that lets the PlayOnline viewer work with Windows Vista. I haven’t tested this out yet and it might be against Terms of Service to use such a thing, so use this at your own risk. But if you’re dying to raise your Chocobo in Vista this might be a solution.