It's possible that the drivers are not compatible with the Windows 7, therefore it won't work on this operating system. If you've done the UPGRADE, then go to Device Manager and remove the drivers. Reboot the PC, reinstall the drivers and the dongle might work this way.
I've also tried to download the drivers and the software, but there is no website to acquire them from. If you know the website of the developer, access it and look in the Support section for additional downloads.