Under Windows 95/98/ME, use RUNDLL32.EXE RNAUI.DLL,RnaDial YourConnectionNameHere. The command is case sensitive, and you must replace YourConnectionNameHere with the exact name of the dial-up networking connection name you wish to use.
The Automation edition of Schedule Wizard also includes an “AUTODIAL” application that will dial and hangup your default connection (Windows NT 4.0 only). The standard installation of Windows 2000 includes a Microsoft utility to do this.