Just 12 hours later...
I plugged in my Magic Jack to the computer this morning. I plugged in an old GE trimline type phone and Voila! A dial tone, and the ability to dial anywhere in the country, basically for free (ok, a one time, nominal fee). Loving it!
The interface on the software is relatively intuitive, allows you to save contacts, though not multiple numbers for one name without creative naming (apparently the designers didn't look to cell phones for inspiration on their phone book).
Now I can lie, foot in the air, and talk away the day...spreading the gospel of usability near and far.