Well, I gave your problem 20 mintues of my time, which is a lot. and Read a couple howto's and other forums and.. well
Everyone who I found having a problem with ASDL was using Redhat linux and not being able to get it to start pppoe.
Some said they got it working after browsing through a few sites in germany, but the major consensus was just to drop redhat for Suse or Mandrake, as those have a handy litltle box you check for asdl. done, end of story setup