How do i change the phone number where my alerts get sent to?

i got a new number and want all alerts to be sent to me and not outer spaceHow do i change the phone number where my alerts get sent to?
Go to your 360 page (360.yahoo.com/youralias), login if prompted. On the next screen click ';Settings'; (in the upper right corner). On the next screen click ';Alerts'; (in the left sidebar). On the next screen click ';Register a mobile device now'; (near the center of the screen, small font)