The present invention facilitates the enrollment of a user with multiple transaction environments, such as, for example, supplier membership programs. In one embodiment the system includes a hyperlink on the hypermedium page displayed on a client node; a hyperlink configuration file located on a network server node; and a client agent located on the client node. The first signaling gateway is coupled between the SCP and a first STP node of the SS7 network. This encrypted data is stored in and recalled from a FIFO buffer.