this is for a UK model only.
firstly you must compleatly remove any driver your modem is using.
wmregdel is the tool for the job available from 3coms web site,then reboot your cpu.
wwhen it reboots it will find the modem automaticly,by now you should have extracted the file on to a floppy
if not do so and reboot.
it will find it again then point it to where you extracted the driver to.
it will install it no probs then reboot again and it will work ,
hope this is of use as it took me 18 months to find this file.
have a nice time>>>>>>>>>ROB.