How can i change my password and my e-mail without changing my mails in in-box ?

I want to change my yahoo address and my yahoo e-mail without changing my items in my e-mail because someone have known my password and my yahoo address

How can i change my password and my e-mail without changing my mails in in-box ?
If you would like to change your Yahoo! password, just sign in to your Yahoo! account with your current password and click the Account Info or My Account link at the top of the page. You will be asked to re-enter your current password for verification. Then:





1. Click the "Change Password" link.


2. Enter your current password in the first box.


3. Enter your new password (as you would like it to be) in the second box.


4. Confirm your new password in the third box.


5. Click the "Save" button.





Or you can use this change password link.


http://edit.yahoo.com/config/change_pw








For security reasons yahoo do not allow you to change your email address you need to open a new account to get a different address, but you can create a extra yahoo email address within your present account to do so use this link.


http://edit.yahoo.com/config/list_alias
Reply:some one has commenting using my account I want to change it with out changing my items in my email.