magicJack USB Phone Jack with One Year of Service for $40 + free shipping

Radio Shack offers the magicJack™ USB Phone Jack

Adios phone bills!
Call anywhere in the U.S., Canada, Puerto Rico or the U.S. Virgin Islands (U.S. VI) for no additional charges. Receive calls from anywhere. Each magicJack kit includes a phone number. Use your regular home phone or a headset/mic combo. Switch between a handset and your headset/mic combo. Broadband, high-speed internet, cable internet, DSL, WiFi or WiMax required. magicJack does not work over dial-up or satellite internet.

* Call anywhere in the U.S., Canada, Puerto Rico and the U.S. Virgin Islands
* Each magicJack includes your very own unique phone number
* Prepaid minutes available for calling countries besides the U.S., Puerto Rico, U.S. VI & Canada
* First year of service included ($19.95/year thereafter)

You'll also need

* Windows® XP; Windows Vista®, MacOS®
* Available USB port
* High-speed internet connection ( 128 kb/s required by magicJack)