There are a lot of posts today on ActionTec's Internet Phone Wizard; tracing to Engadget and a review in Tom's Networking. However these glowing reviews miss a point. This application is not really integrated with Skype. It's an upgrade to an older device. This is the description via Engadget:

Tom’s Networking took a quick look at the Actiontec Internet Phone Wizard — a USB adaptor that lets you hook a telephone up to your PC to use Skype — and found it to be an easy way to make and receive Skype calls. Downsides include no Caller ID for Skype calls and the need for your computer to stay on to host the box. But for $60, it seems like a better deal than some other solutions, like the Siemens M34, which will set you back about $200.
Engadget

Engadget get's the key elements right. However none of these articles specifically mention whether the ActionTec is compatible with the Skype API. I don't think it or any of the currently broadly available USB devices really leverage it.