The above download, serial_interface.zip, contains a header and a source file (.hpp, and .cpp) that define the serial_interface class. This class was written to make it easier to implement and use serial ports in Windows for native C++ programs. While the references in the MSDN library for Programming Serial Connections are easy to follow, there may be times where the serial port should be configurable during runtime. This is a basic class, and does not support all of the features I would like, but it makes the initial setup much easier, thereby saving the software developer time.