Its quite easy, if u know the Password, Full name of the Original owner, secret question/answer and preferably the cd key, then call Blizzard billing support, (You can do it through skype) and say something like
"My email isnt working anymore so i would like to change it to my new one if thats possible please" Then they ask you a bunch of questions and hopefully change it for you.
What i did is for example say the email on the account is
[email protected]
go to yahoo and make a new account with a name like
[email protected]
and when you call blizzard say that you wrote too many 1's.
Worked to me, then when its changed to ur new yahoo email then you can simply change it to your original email.
Hope this helped![]()