Lo Angeles-based Shift4 Corp. unveiled its latest e-payment offering, $$$ upon THE NET April 3 at the Spring Internet World 2000 exhibit in Los Angeles. Powered according to Shift4's $$$ IN THE BANK electronic platform, $$$ onward THE NET is an e- payment gateway and application service that allows merchants operating physical and/or e-commerce points of sale to gain real-time payment authorizations via the Internet. Supported