It’s easy to set up, just follow these simple steps:
   1. Click on the button below to launch the BlackBerry® Internet Service email set up website
   2. Select Create New Account (or login if you already have a login and password for this website)

   3. When prompted, create a user name and password for this website (note: this is not the step where you enter your Yahoo! Mail username/password)

   4. Under Email Account Set Up, fill in the Yahoo! ID and Password for your Yahoo! Mail account. (If you don’t see this option on the home page, select Email Accounts, then Add Account).