Well for the Big V you don't need to be an ubergeek.

Actually, they have some phone units with the VOIP built-in. Just realize a few things...the telephone "jack" that you plug into is on the VOIP box, not the wall. Meaning if you want more than one phone to use the line, then you need a multi-handset cordless phone. Older 2.4GHz phones had some intereference problems but we have a 5.8GHz spread spectrum phone and it works fine. You don't get seamless E911 service with all provides, but most are going that route...but remember the 911 service is tied to the box which is tied to the billing address. So, if you move the box (from say Chicago to Miami) and dial 911, you get a
Chicago VOIP 911 operator! And, as in my case, if your Internet goes down, you lose phone service. But they all have an option where you can forward calls automatically if the servers can't reach your VOIP box.
Although it's a violation of their terms, a buddy got a VOIP box and took it to his son who is going to grad school in Germany. So now, when he wants to call his son, he just makes a local phone call! Likewise, his son can call anywhere in the states (plus Canada, Puerto Rico, France, Ireland, Italy, Spain and the UK) and dad doesn't have to pay anything extra! Their $25/mo plan gives unlimited calling in the US, Canada, Puerto Rico, France, Ireland, Italy, Spain and the UK! By similar token, you can take the VOIP box on vacation and when you plug it into the hotel's broadband connection, family and friends can call you at your home number.