Wirelessly posted (BlackBerry8703e/4.1.0 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/104)
Apply for a 2nd Citi AAdvantage Amex (or Citi AAdvantage MC -- take your pick), and then cancel your existing card. The 2nd card will come with an annual fee waiver for the first year, AND you'll get an additional 25,000 bonus miles if you charge at least $750.00 to the new card within the first four months!
The best way to cancel your current card is to access your account online, and then send a message to Citibank to close the account. That way, you won't have to deal with Citi's phone reps, who I am told can be pretty aggressive in trying to dissuade you from cancelling an account.