1. A user-interface system for entering an alphanumeric string for identifying information content, the system comprising: presentation logic for displaying on a presentation device an image of a virtual user alphanumeric interface, the virtual user alphanumeric interface including an image of an overloaded keypad that has a two dimensional configuration of alphanumeric clusters, each cluster corresponding to a set of selectable alphanumeric symbols including alphanumeric characters and alphanumeric numerals, the virtual user alphanumeric interface further including a string field for displaying the alphanumeric string of alphanumeric symbols selected by a user; and selection logic for receiving user actions from an input device with a five button interface, said interface including four navigation-direction controls and a selection control, said selection logic including logic, cooperative with the presentation logic, to present visual cues to aid in the navigation of the virtual user alphanumeric interface and the selection of an alphanumeric symbol, said logic to present visual cues including logic to signify on the image of the virtual user alphanumeric interface the user selection of an alphanumeric cluster and including logic to aid in the selection of a symbol from the set of symbols associated with the selected cluster to cause the selected character to be displayed in the string field of the virtual user alphanumeric interface.