Nokia ADSL modems. Upgrade to the M11 series.
Available with or without wireless (the MW1222 has a PCMCIA slot on the back for a Nokia C110 wireless card.)
These are the modems that Telecom hired out to everyone for most of the first two years of Jetstream in New Zealand.
To use your M1122 as a bridge instead of a router:
Windows users:
Linux users:
If you need to upgrade the firmware on your M1122 (for a number of possible reasons: your current firmware is corrupt, you need a new feature, you have problems pinholing GRE), then you will need:
The latest firmware (and probably the last there will be unless there's a serious flaw found) is Gx1x2230.R04.
5 pages link to M1122: