D-Link DIR-505 User Manual page 33

Section 3 - Router Mode
If you selected PPPoE. Connection, you will see the following
screen. Enter your PPPoE username, password and verify
password, then click Next to continue.
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. Connection, you will see the following
screen. Enter your PPTP username, password, and other
information supplied by your ISP. Click Next to continue.
D-Link DIR-505 User Manual 28