To start we will need to turn on the Xbox, then go to the Settings heading, from there you will need to use the Left Stick to move Down until you reach System, and then press A.
In this menu we will need to scroll down to Network Settings and then press A.
Next is to select Wired Network and hit A.
Then select Configure Network and hit A
At the menu you will need to switch the the Additional Settings tab using the Left Stick to move to the Right.
Once in the Additional Settings tab, we will want to select the PPPoE Settings and press A.
To edit the PPPoE settings we will need to add the SpiritUser Name and Password to the settings. Once you have added the User Name and Password, please go down and hit Done.
Once you have hit Done, you will be brought to the Additional Settings tab. From here you will want to hit the B button to go back and you should be ready to use the PPPoE connection. You may run a test to Test the Xbox Live connection on this menu as well.