Yahoo Secret Question..

I've heard from someone who hangs around yahoo a lot that he figured out a way to change the secret question + answer to a yahoo acount. he said a lot of info is required to do this including the date when the id was created and other stuff.

How can you do it?

Also i was wondering after quickly looking at the html of the secret question page that there are some kind of java script commands, if you can bypass it somehow. And last I heard there is a way of deleting ids. It involves using a code given to you when you make a new account that they give you by e-mail. It has to do with taking the code and changing it or something.