CPP Class for DMA (DVD) handling

The job is to develop a c++ class to work with DMA/PIO mode for CD/DVD devices. There is a VB Script available in the internet: <[login to view URL]> This ImgBurn and others are using, too. So it could be a base. Usage: We give a driveletter to the class/object. Then we can deal with the object. Functions: 1.) Get the used mode for a device. Return succes/failed. Pointer to a UINT for PIO or DMA 2.) ChangeMode. Return success/failed. Class have to work on Windows XP, Vista, Win7 (32&64bit) Visual Studio 2008 (Unmanaged C++). Unicode codepage.