How to connect c++ program with usb device

[Huitzilop]

Hi people!
I wonder how could I connect c++ program with usb device (the device is eizon n1, for time&attendance). I want to control the device through my program, for beginning: turn it on, turn it off, etc! I learned c++ on university, but we haven't mentioned this stuff...

Should I install a library libusbx?

Thanks!

P.S. It's Windows 7 and Borland C++ builder 6