just a quick note to bring peoples attention to a site that got me working over broadband (British provider called BTBroadband), using a BT Voyager 105 ADSL modem. The site is
http://www.lack-of.org.uk/viewarticle.php?article=114

After struggling for a week to get my connection working, I followed this guys instructions and it worked first time

have fun

Nerderello