Neat little program I found on the Windower forums. It basically sends info to the client to make it think you are a differant race. Everyone else will remain the same and no one will notice the differance. It's completely client side. It's still a little buggy so follow the directions. Still not a gurantee it won't crash, so I wouldn't use it while doing important things. It's still fun, though.

http://ffxi.archbell.com/forums/viewtopic.php?t=3151