I can't help you with changing the language because it's in the device's ROM, which can't be changed. For the USB driver, go to this page:
http://www.hpcfactor.com/downloads/details.asp?r={4600CBBF-165D-4DC5-9C22-52DCD219921E}
Click on the Download button next to "Inflated.zip." Open this ZIP file and copy the file "cl_m3112.cab" onto a CF card. Put the CF card into the CF slot of the device, and then open "My Handheld PC" on the device. Go to the CF card folder
(it will probably have a different icon from the others
) and find cl_m3112.cab. Double-tap on that to install the driver. After that the USB stick should show up, though it will also have some strange characters as its name.
Hope this helps.