new internet service - sonicwall setup

Hello,

I am coming to a new location where we are adding new internet service.  The problem is that the firewall is a sonicwall network security appliance and I'm not sure how to configure the device to the new parameters.  

I'm guessing these are not plug and play.  Is there a tutorial for these devices or can anyone coach me as to what I should focus on.  Just at a glance, it would seem I need to go under Network > Interfaces > Select the right Interface and then adjust the settings.

Is there something I am missing?