A user-interface system for entering an alphanumeric string or alphanumeric clusters for identifying information content is presented. The user-interface system has presentation logic for displaying an image of a virtual user alphanumeric interface on a presentation device. The virtual user alphanumeric interface includes an image of an overloaded keypad that has a two dimensional configuration of alphanumeric clusters. Each cluster corresponds to a set of alphanumeric characters. The user-interface system also has cluster selection logic for receiving user actions from an input device (e.g., five-button interface) to provide visual cues to help the user select an alphanumeric cluster and to cause the selected alphanumeric cluster or character from a cluster to be displayed in a display field of the virtual user alphanumeric interface.