Abstract: A system for providing a dynamic shopping cart window within a windows-based content manifestation environment provided within a Web browser includes a server system configured to transmit a software system and data related to a shopping list from a shopping list content source via an electronic data network. A Web browser client is provided operating within a data processing system that is coupled to said server system via the electronic data network and having a content manifestation environment. The Web browser client is operative to receive said software system and said data via said server system to process said software system and said data to produce a controllable shopping cart window object within said content manifestation environment of said Web browser client. The controllable shopping cart window object is configured to dynamically manifest therein the shopping list received from the shopping list content source in accordance with said data.