Had a first experience with a 2Wire mio box last Saturday, when I was helping my niece set up her broadband connection. The box is essentially an ADSL router-modem with VoIP features built in.
Similar to a typical ADSL setup, you hook up the power, microfilter, phone line and ethernet cable, and your PC should pick up a DHCP address. Launch the gateway IP into the browser and you’ll get into the setup screen. From there you can get to a familiar page with PPPoE configuration.
One good thing about its default setup is the wireless enabled by default, with WEP. The default WEP key is printed on the box itself.