Login yahoo messenger and use it. You need a yahoo mail account to login into yahoo messenger. At first create a yahoo account to login into yahoo messenger. In this lesson you can easily know how to sign in yahoo messenger using your existing yahoo account.
1. Open your yahoo messenger software. Click mouse right button up to Yahoo! Messenger icon and click Open text.

2. Then yahoo messenger dialog box will open.
- Click and type your yahoo email address into Yahoo! ID blank box.
- Click and type your yahoo account password into Password blank box.
- Click Sign In button to sign in into yahoo messenger using your yahoo account.

3. You see yahoo messenger with your name. If you see any massage click close button.
After sing in yahoo messenger you can chat and call with others.