I went to email settings on my BB and deleted my old email account. Then created a new email account with the same email address. You can do the same at
BlackBerry Internet Service
If you have a user name and password, enter it in the fields.
If you don't already have a user name or password click on create new account:
You will be asked for the blackberry's pin # and esn which can be found by going to options then status:
Follow the steps to create a user name and password
Once signed in click the trash can next to the email account you wish to delete.
Click on setup new account and enter the email address and password