What really happens when such a modem is plugged into a Windows PC is its identification as a USB CD-ROM drive with a CD in it. After that this "CD" autoruns, the autorun program switches the modem state, the modem identifies itself as a virtual network adapter, for which the driver is then installed. The virtual network adapter shows as Windows Mobile-based Internet Sharing Device in the Device Manager. The driver it uses comes from the virtual CD mentioned earlier. It's in the MobileBrServ\data.bin ZIP archive, in the driver folder. Two files: wceis.cat and WceIS.inf. It seems to be made by Microsoft for one of their Windows Mobile based devices.
The modem installs and works on Windows XP SP3, but not on SP2. However, since it uses standart Microsoft drivers, I wonder if it can be made to work on OSes below XP SP3, particularly Windows ME. Maybe if we identified the device, for which the Microsoft-written driver that this modem uses was intended, we could find out more about it.
The driver file is attached to the post. The virtual CD image is uploaded to http://d01.megashare...qPbd/HiLink.ISO.
Anyone is welcome to share his thoughts on the subject.