This is old and needs a few tweaks but could help.http://gentoo-wiki.com/HOWTO_Connect_using_PPPoEhttp://www.gentoo.org/doc/en/handbook/2 ... t=1&chap=3http://www.gentoo.org/doc/en/handbook/2 ... 3#rp-pppoe
Might first see if the usb adsl modem is recognized / have a module for it = happy ?
"list usb devices"
Then from there try kppp or similar using the guides or something someone posted here.
Might be a bit easier if using a d-link adsl modem / router in one device and just connect via wifi / lan cable to this. SHould be about us$50.00 per adsl modem / router.
Some one that has done something like this above will post just hang in there.
" like a surgeon mmhhhh for the very first time " LOL Whgat is the name of that song from Madonna LOL.
Hope this gets you started.