Device Driver Installation
As of version 0.1.7.10 the device driver is distributed as a seperate package which includes everything to use libusb-win32 for single devices as a normal device driver. The installation of the filter driver is not necessary any more! 
Log in as a user with administrator privileges. 
Download the latest device driver binary package (libusb-win32-device-bin-x.x.x.x.tar.gz). 
Extract it to a temporary directory. 
Rename and edit the sample inf-file 'libusb.inf' to match your device(s) (modify the vendor and product IDs, strings etc.). Create different inf-files to install different types of devices (devices with different IDs). 
Unplug the device(s) from the system. 
Open the Windows Device Manager and remove all incorrectly installed USB devices (device entries with a yellow exclamation mark). 
Reconnect the device(s) to the system. 
When Windows asks for a driver, choose the inf-file(s) created above. On Win2k and WinXP systems, Windows will warn that the driver is is not 'digitally signed'. Ignore this message and continue with the installation. 
Open the Windows Device Manager to verify that the device is installed correctly. Run the test program (testlibusb-win.exe) from the 'bin directory'. It should print out the descriptors of your device(s). 
A reboot isn't necessary. 