I use the total BT Home Hub, have never had any problems.
Setting up is even easier, plug everything, wait 1 Hr, (only took about 5 minutes with me) till the Internet LED stops flashing, your then connected. Did everything through WiFi (just needed to configure the WEP Key) so no wires anywhere now. When installing the BT Setup, check what you want installing -ie -BT Yahoo, BT Messenger etc....
As for the BT Talk calls - you jst need to goto the URL as incated in the setup manual, register your number and away you go, you'll know when your on the BT Talk - the dial tone will be higher pitched of that of the normal landlane.
One thing I have found is that some people and also mobiles are blocked from dialing into the BT Talk due to it being an Internet #, but after a few updates that the Hub does, most has been relsoved, only a few still have this issue with us.
BTW - We had the Hub for a 5 months now, never look back now.
Hope this helps