Hi, I´m working in a experiment, until now I used the serial port of the pc to send and receive the data I wanted to put there, using simple C commands, like outportb() and inportb() with bios.h, even using turbo c++ 3...
I have look to FT232 chip, but it seems a bit complicaded to interface it and put or read some data in serial outputs of it.
The FT232 chip enumerates as a com port, so you can use it as you would any other com port.
Unfortunately, I dont think usb drivers for DOS are readly available and the usb interface is not trivial to code.
You could always upgrade your compiler to 'Borland Turbo C++ 2006', which is a free download from Code Central.
Then write code using the Windows API.