We Have Described The Development Of A New Micro-payment System, Netpay, F- Turing Different Ways Of Managing Electronic Money, Or E-coins. Netpay Provides An Off-line, Anonymous Protocol That Supports High-volume, Low-cost Electronic Trans- Tions Over The Internet. We Developed Three Kinds Of E-wallets To Manage Coins In A Netpay-based System: A Sever-side E-wallet Allowing Multiple Computer Access To- Coins; A Client-side E-wallet Allowing Customer Pc Management Of The E-coins, And A Cookie-based E-wallet Cache To Improve Performance Of The Client-side E-wallet C- Munication Overhead. Experiences To Date With Netpay Prototypes Have Demonstrated It Provides An Effective Micro-payment Strategy And Customers Welcome The Ability To Manage Their Electronic Coins In Different Ways. References 1. Dai, X. And Lo, B.: Netpay – An Efficient Protocol For Micropayments On The Www. Fifth Australian World Wide Web Conference, Australia (1999) 2. Dai, X., Grundy, J. And Lo, B.: Comparing And Contrasting Micro-payment Models For- Commerce Systems, International Conferences Of Info-tech And Info-net (icii), China (2001) 3. Dai, X., Grundy, J.: Architecture Of A Micro-payment System For Thin-client Web App- Cations. In Proceedings Of The 2002 International Conference On Internet Computing, Las Vegas, Csrea Press, June 24-27, 444--450 4. Dai, X. And Grundy J.: “customer Perception Of A Thin-client Micro-payment System Issues And Experiences”, Journal Of End User Computing, 15(4), Pp 62-77, (2003).