Setting up my dsl usually has nothing to do with the isp or modem/router/location.
It's a simple pppoe connection using a simple network card on eth0.
The only things I do whenever I set up my connection is put the username, the password, and the "service name," and I'm all set.
DSL in Windows works out-of-the-box, and I've never had an ISP CD, I just plug in the cable from the dish to my network card, and that's it. In Windows, my connection type is "broadband," and the device name is "Wan Miniport - pppoe." The network type is Intel Pro/100 VE Network Connection.
Usually, rp-pppoe just does the trick (pppoe-setup), and I'm fine. If I'm able to also install its gui, (tk-pppoe, in the same package), then it's perfect.
However, for whatever reason pppoe seems not to ship with Sabayon 4.2, and trying to install it or wicd brings, as I said, dependency hell.
It's weird because I can do the above with 99% of all distros (all kde and gnome flavors).
And no, I've not installed 4.2 on the hd, as I don't want to go through the whole setup and find that I can't connect. I'm only using the 4.2 livecd. I guess if the dsl tab is greyed out in the live session, it will be greyed out when I install.