Liela said:
I can try, but she fussed at me last time and said she was making an exception to help me this time because I lost the registration code a long time ago.
I was thinking along those lines when I read your first post. They don't often divulge such personal details through their chat forum, and always tell people to ring the hotline.
To get your password changed, you need to phone up Play Online and explain your situation to them. They will ask you a lot of personal questions about your account, including your age, name, address, credit card details, etc. They will also ask you for the registration code you used when you first registered Final Fantasy XI (this is the code on the inside of your Final Fantasy XI box.)
They should then reset your password. I haven't personally ever done this, but I have a lot of friends who have had to for whatever reason. Good luck to you, this is a tiresome process and it sucks that you can't login ; ;