AT&T DSL IP changing program/ script required.

Hello, I have AT&T DSL internet line and need a program to change IP from keyboard function. He who has att DSL can do the job... I have modem that can change IP by resetting it, but need something to reset modem/router from keyboard shortcut wothout open the router admin page. Only person' who already have att DSL or use this companies Internet. Thank you M