From Budget Dialup:
Budget Dialup provides Internet access as-you-go. Just install the dialer software and whenever you need Internet Access, you can use it like a calling card. You can buy some time, use it up whenever you like, and buy more when you need it. The software automatically creates your account and configures a dialup connection. It makes a perfect backup ISP or on-the-road connection, or inexpensive alternative for people that only use the Internet infrequently. No matter where you are in the US, the software will automatically retrieve local dial-up numbers for you to choose from, making it perfect for travelers as well. This free trial version will give you 5 free hours of Internet Access that can be used up within a year. It does not require a credit card for the trial. If your free time is used up, you can easily purchase additional refills if you want. Great service to have, it doesn't cost you anything unless you actually need it.