Chibi15
Official ai tenshi
Read here
Click here for the full story
http://help.apple.com/mac/5/help/mail/pgs/mac43.htm
( it seems that the button is not here yet but its stated in the help document so... )
To convert your trial account to email-only, go to www.mac.com. Click Account in the .Mac menu bar, then click the Email Account Management button. Enter the member name and password of the trial account you'd like to convert, then click Convert.
Print your account information for future reference, then click Continue.
Click here for the full story
http://help.apple.com/mac/5/help/mail/pgs/mac43.htm
( it seems that the button is not here yet but its stated in the help document so... )