你可以試著進去UPDATE看看.裏面有連接.
"
ESTA Update
All travelers entering the United States under the Visa Waiver Program by air or sea must have an approved ESTA Travel Authorization. This has been a requirement since January 12, 2009. After you have applied and received your ESTA Travel Authorization number, you may update your file before each U.S. entry. You can update your Travel Authorization multiple times, but you should not apply for a new Travel Authorization unless you have a new passport, the circumstances around your Visa Waiver eligibility has changed or your current Travel Authorization has expired. A Travel Authorization is normally valid for two years. Each traveler may update their own Travel Authorization before departure.
Travelers with an approved ESTA Application Number may update their own travel authorization before each trip to the United States:
Email address
Telephone number
Airline you are flying with
Flight number
City where you are boarding
Address while in the United States (unless if transit through the U.S.)"
http://www.esta.us/update.html