Rooting not required! Amiga, OS/2, and several others need not apply but this will cover most of you. Providing most of you have Windows, Mac, or Linux.
I simply used these instructions:
Tether an Android Phone Using Proxoid - Linux Magazine Online
Code:
Only difference is that instead of putting what he did into his file put this:
SUBSYSTEMS=="usb", ATTRS{idVendor}=="0bb4", ATTRS{idProduct} =="0c01", MODE="0666", OWNER="brett"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="0bb4", ATTRS{idProduct} =="0c02", MODE="0666", OWNER="brett"
SUBSYSTEMS=="usb", ATTRS{idVendor}=="22b8", ATTRS{idProduct} =="41db", MODE="0666", OWNER="brett"
Change brett to your username. You may have to reload the rules (or just reboot) before things finally fully take off for you but I'm posting this tethered through my phone using this capability in Ubuntu 9.10 right now.