AT&T Yahoo! ISP: Creating a new DSL connection profile for Windows 98.
How to create a new DSL connection profile for Windows 98 for AT&T Yahoo! ISP?
To connect to the Internet, you need to create a DSL connection profile in your PPP client software (such as Enternet 300 or the Windows XP PPPoE software) that contains your AT&T Yahoo! Member ID and password. Your PPP software uses this profile to authenticate your DSL connection.