This present invention is embodied in a system and method for ordering a consumer item (such as a product or a service) in an interactive computer environment. The system of the present invention includes a user interface that provides automatic and real-time updating of attributes and available options...http://www.google.com.tw/patents/US7328171?utm_source=gb-gplus-share專利 US7328171 - System and method for ordering consumer items in electronic commerce
