C++ SMS SDK for Visual Studio

Hello guys.I just need your opinion on something I found. It is an application written in C++ using Visual Studio 2008 to illustrate how you can send and receive SMS messages.With a software called Ozeki NG SMS Gateway and the downloadable source code. I downloaded and configured the software (they have great config info on their website) and then I use the sample source code. You can find all the info and the sample source code here: http://ozekisms.com/index.php?owpn=376
What do you think? Have anyone tried this before?