D-Link DIR-605 Manual page 21

Section 3 - Configuration
If you selected PPPoE, enter your PPPoE username
and password. Click Next to continue.
Select Static if your ISP assigned you the IP
address, subnet mask, gateway, and DNS server
addresses.
Note: Make sure to remove your PPPoE software
from your computer. The software is no longer
needed and will not work through a router.
If you selected PPTP, enter your PPTP username
and password. Click Next to continue.
D-Link DIR-605 User Manual 17