This is the one for XP that Mentor do not supply on the CD rom disk. You need to install it to a folder then run the install file to load the driver.
Ignore the message about it being unsigned, it works OK.
It is much better than the generic USB driver from Conexant,(also unsigned) gets rid of the modem shriek! Also loads the speeker phone support etc.
Other Mentor modem drivers can be found on the distributers site www.bona-uk.com. (No need to download the chinese font set!)