It make openocd easy to used.
the GUI look like this:
I am sorry i can’t upload the install file, becaure it is too big.
you can download it at: http://www.100ask.net/attachment.aspx?attachmentid=555
the openocd.exe in the package is compiled with ftdi libftdi, it you use openocd.exe for libusb,
you can replace the openocd.exe