you wont need to do much at all. I dont know who your phone company is
but, most of them provide the modem (which you lease) and its a pretty easy
setup.

The modems mac address is on file with the telco. You have a user name and
password. Once you set up your modem you dont have to enter it again. The only
thing you do on your end is plug the modem into your computer at your ethernet
port, turn on your web browser and it redirects you to a page to put in some
information. That page is hosted by the telco and after you configure just a few
things - your dont!

Now, some people have needed to set up PPOE but I have never had to do that with
any of my clients who are with AT&T or any Bell company.

You might just call them and ask about the modem. Get the make and model so you
can do a bit of research ahead of time.