When you connect the b-mobile USB 3G modem (TechFaith Flying Angel) to a 64-bit Windows 7 computer, it does not seem to be detected / the drivers are not installed automatically. The drivers need to be installed manually after installation of the modem software as shown below.
Summary: Use drivers located in “C:Program Files (x86)b-mobilePocketmodem Connection ManagerInstallDriversdriversQUALCOMTDRV_QUALCOMAWinVistaX64”. This worked in 64-bit Windows 7 Home Premium and should work in 32-bit Windows and other Windows 7 versions
Pictorial Installation Guide
- Install Modem Software (SeamlessKeyLauncher.exe in CD drive that shows up when connecting the modem)
- After installation, go into “Device Manager” (Control Panel > System and Security > System > Device Manager in the side bar)
- Find “Qualcomm Configuration” under “Other devices” and “Mobile Connect” under “Ports (COM & LPT)”.
- Right-click > “Properties” > “Update Driver”
- Select “Browse my computer for driver software: Locate and install driver software manually” and then specify “C:Program Files (x86)b-mobilePocketmodem Connection ManagerInstallDriversdriversQUALCOMTDRV_QUALCOMAWinVistaX64” and click next to install the driver
- Ensure that all unknown devices (I believe there are 3) and everything should work now. Connect to the Internet and be happy
The Wheat Field 
Hey, does this work over Vista x64 as well? I’m trying it right now with my Parallels Desktop running Bootcamped Windows (long word, I know) and see if it works.
When things go through a VM it may get a bit iffy, but since you should be able to pass the USB controller to the VM it could possibly work. But either way it should work with Vista anyway