How do I change my email address on my Blackberry Pearl?

My mom and I switched phones. I just need to change the email address from hers to mine. Thanks. Best answer gets 10 points.How do I change my email address on my Blackberry Pearl?go to your carriers bis site ( blackberry internet service) ex. search for at%26amp;t bis .. then go to edit use the bb pin number to gain access if u dont know the pasword once in u can set up different email and delete others