well, i thought the code was the same bc i still have at&t as when i had my blackjack. so i put in the code and it deactivated all of the voicemail services :/
looks like i will have to call at&t to get them to fix it.
but i am glad i found this thread to show me how to do it correctly when i get it fixed
well just to let everyone know, if you screw up your phone, you can just follow the steps posted above to reactivate your #, then note the #, and follow the steps.
thanks again.
and thank you to the TS for starting this thread to solve my problem.