google checkout 资料

   ֪ͨapi                       http://code.google.com/intl/zh-

CN/apis/checkout/developer/Google_Checkout_XML_API_Notification_API.html

 checkout api   http://code.google.com/intl/zh-

CN/apis/checkout/developer/Google_Checkout_XML_API.html#https_auth_scheme

precessing api
http://code.google.com/intl/zh-

CN/apis/checkout/developer/Google_Checkout_XML_API_Processing.html#notification_api

定制购物车
http://checkout.google.com/support/sell/bin/topic.py?hl=en&topic=8671

开发论坛
http://groups.google.com/group/google-checkout-developers-forum?pli=1