I changed my OS from Windows 7 to Windows 8. I need a driver that is compatible with this OS for my BSNL 3G MODEM. Where can I obtain one?
You can find all the available drivers for your product on the official website of the developer. However, it seems that the files from there are currently unavailable. To obtain a download link, you can use Google. For additional support, use the official website mentioned above to contact the developer.