Hi Ice!
You need just to run : adsl-setup script , my invoking this one you are asked several questions mostly concerning your interface,ADSL account and connection type after completion of this prcedure you would be able to simply issue : ifup ppp0 for connecting to your ISP.
Note1 : Do not forget to put atleast one valid DNS address in /etc/resolv.conf.You may try 192.9.9.3 (Sun DNS).
Note2 : I have not tested any 3rd party application to do this but there is a serious doubt that they can do the job as simple as adsl-setup.
