PPPoE Setup for OS X 10.6 Snow Leopard & 10.7 Lion
for 10.6 (Snow Leopard)
Opening the Network Preferences:
To access the Network settings, click the Apple logo, then System Preferences.
Select Network.
Click Add (+) at the bottom of the network connection services list, and choose PPPoE from the Interface pop-up menu.
From the Ethernet pop-up menu, choose Ethernet. For the Service Name enter “MHTC”, then click Create.
Note: Setting the field Disconnect if idle for x minutes is not needed. There are no ramifications/extra charges for leaving the connection active, and most customers prefer to have their DSL always on. It is probably best to leave this selection disabled.