Just use DHCP / Automatic / Simple setup if you're going through a router. If anything your router is already holding a PPP or DHCP session, and Verizon will not allow you to pull more than one. That is, unless you pay for additional IP addresses which requires business service.
If you're connecting into the ONT directly to get NAT 1 on a PS3, you should consider looking at UPnP or DMZ first.