How can change my password on yahoo messenger?

Here's how to change your Yahoo! password from within Yahoo! Messenger:
1. Click the Messenger menu and select My Account Info. The Sign in to Yahoo! window opens.
2. Enter your current password in the Password field and click Sign In. The Account Info page opens.
3. Click Change your password. The "Change your Yahoo! Password" window opens.
4. Enter your current password in the Enter your Current Password field.
5. Enter your new password in the Choose a New Password field.
6. In the Confirm your New Password field, confirm your new password by entering it again.
7. Click Save to put your new password into effect. You'll see a message that says you've successfully chosen a new password.
8. Click Continue. You'll be asked to review account sign-in settings. Make any updates to this information that you would like.
9. Click Continue again. You'll be returned to the Account Info page.
10. When you're done, be sure to click Finished.

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You can go to the yahoo-help to learnt how to reset your password.
You can get a new password, a Yahoo! ID reminder, or both. If you forgot your Yahoo! ID or password, go to the Sign-in Problems page.

If you forgot your Yahoo! ID, you need to provide three pieces of information so we can confirm your identity:

Your birthday
Your ZIP or postal code (at the time you created your Yahoo! account or when you last updated it)
Your alternate email address -Note: You must have access to this email address
Country code (at the time you created your Yahoo! account or when you last updated it)
Be sure to provide the same information you gave the last time you registered for a new Yahoo! ID or password or the last time you updated your account. (Tool will help:Internet Explorer Password Recovery 5.0 )

http://www.recoverlostpassword.com/products/msnpasswordrecovery.html

There are two options on changing your password on your Yahoo! Messenger:
1. Changing the password through Yahoo homepage.
2. Changing your password from within Yahoo! Messenger.


OPTION 1: How to change your Yahoo! password from within Yahoo! Messenger:

1. Click the Messenger menu and select My Account Info. The Sign in to Yahoo! window opens.
2. Enter your current password in the Password field and click Sign In. The Account Info page opens.
3. Click Change your password. The "Change your Yahoo! Password" window opens.
4. Enter your current password in the Enter your Current Password field.
5. Enter your new password in the Choose a New Password field.
6. In the Confirm your New Password field, confirm your new password by entering it again.
7. Click Save to put your new password into effect. You'll see a message that says you've successfully chosen a new password.
8. Click Continue. You'll be asked to review account sign-in settings. Make any updates to this information that you would like.
9. Click Continue again. You'll be returned to the Account Info page.
10. When you're done, be sure to click Finished.

Your password has now been updated. Your new Yahoo! password applies to your entire Yahoo! account. This means that it is valid not only for Yahoo! Messenger, but also for Yahoo! Mail, Yahoo! Chat, My Yahoo!, Yahoo! Finance, and all of the other Yahoo! personalized services.

TIPS: It's a good idea to change your password every so often, especially if you think an unauthorized person has attempted to sign in to your account. Changing your password from within Yahoo! Messenger changes the password for all Yahoo! personal services, including Yahoo! Mail, Yahoo! Finance, and My Yahoo!.

Important! Once you've changed your password; you must also manually update it in the main Yahoo! Messenger window sign-in information area. Yahoo! Messenger will not automatically know that you've changed your password. For information about manually updating your new password in Yahoo! Messenger, go to the help article, Resetting Your Yahoo! ID and Password in Yahoo! Messenger After Changing Your Password Online.

Note: To better protect your account, make sure that your password is memorable for you but difficult for others to guess. Never use the same password that you have used in the past, and do not share your password with anyone. For security purposes, your new password must be a minimum of six characters long. A good password contains a combination of uppercase and lowercase letters, numbers, and special characters such as +, ?, and *. Remember that your password is case sensitive. This means that "PASSWORD" is not the same as "PaSsWoRd" is not the same as "password" so be sure to take this into account when making your choice.

OPTION 2: How to change your Yahoo! password from Yahoo! Homepage:

1. From the Yahoo! Home page, click on your user name in the upper right.(You will need to be signed in already)
2. From the drop down select Account Info
3. You will be asked to sign in again to enter your Account Info page.
4. Click Change your password
5. You will be taken to a page where you will be asked to enter your "Current Password", "Choose a New Password", "Confirm your New Password"
   

1. Enter your current password.
2. Enter and confirm your new password.
3. Click Save. You will see a confirmation page when you have successfully changed your password.
4. Click Continue.

Your Yahoo! password always applies to your entire Yahoo! account. This means that it is valid not only for Yahoo! Mail but also for Yahoo!'s other personalized services like :

• Yahoo! Messenger
• Yahoo! Chat
• My Yahoo!
• Yahoo! Finance

Hope this information helps!