question....
Why are you adding a DNS suffix to your Internet Connection? Even with PPoE, I am not sure why you would need it. Unless you're trying to do something we are not yet aware of that requires it.
This is what my network looks like:
This is what my network settings look like (which should also show you where to find them for your system):
The "Internet Connection" appears to be only for services running through your computer - MSN Messenger, virtual server stuff you can let other people access on your system.
But as you can see, my motherboard mounted RealTek is set up for DHCP from the router. If your provider provides a PPoE DHCP address, then your adapter should look like this, afaik.
I do recommend, even if you don't have a computer, to get a hardware firewall/router.
Comcast assigns me an ip (not sure if its DHCP or static, but I don't particularly care) and then the modem passes the info to the router, which then does NAT addressing magic and passes the internet to the other computers to which it has assigned ip addresses of the flavor 192.168.0.XXX.
All the local computers talk to each other through the hub/router.
I checked my router to see if it supported PPoE, and it does - it has a page to set up your username, password and other settings required for a PPoE connection.
BB