http://www.buy.com/retail/product.as...70&dcaid=17070
I am not familiar with this product... Maybe someone can use one tho ^ S&H is free, so it's really a matter of sales tax and doing rebate paperwork 
Get a phone that fits on your keychain! The Vonage V-Phone turns any PC or laptop into a fully functional Vonage telephone.
Vonage Talk Software Loads Quickly and Automatically!
The Vonage V-Phone comes with Vonage Talk software pre-loaded - there's no need to install it on your PC and no need to restart your computer. Simply insert the Vonage V-Phone into any available USB port, plug the earpiece microphone into the side of the Vonage V-Phone and you're ready to make and receive calls! Remove the drive when you're done and the phone and all your important contact information goes with you.
Easy to Use
Vonage V-Phone is a fun, intuitive on-screen telephone that can make and receive calls - plus a whole lot more. And because it's Vonage, you get to enjoy extra features like Caller ID, Call Waiting, Call Forwarding, etc. - included at no extra charge!
Save on Phone Calls Wherever You Are
A great solution for people on the go, the Vonage V-Phone fits on your keychain and can be used anywhere there's a high-speed Internet connection! Imagine the savings of making calls from your hotel, an Internet café - you name it! It's powered through your PC so there are no batteries to replace. (Currently not compatible with Macintosh computers.)