I'm a complete CLI newbie, and I'm posting PPPoE from Verizon with MacPoET on OS X. Don't be intimidated by the instructions. Just keep plugging away. It took me a couple of hours, but I eventually got it.
Oh, those commands that seem so onerous are 1) adsl-start 2) adsl-status and 3) route add default xxx.xxx.xxx.xxx which you get from the adsl-status command. Not too hard if I can do it. My default route is always the same (I'm assuming a router at the CO, or maybe my Wellfleet modem. Don't know if it acts as a router) so after the first couple of times, you can connect pretty effortlessly.