I just got my VAGCOM 12.12 on this site http://www.obd2tool.com and installed it on my computer that has a Win 7 system. I have tested it on my Q3 to reset airbag. The cable works perfectly and no worries. No driver problem or software problem.

VAGCOM 12.12 Functions and Features:
1. Support audi, covers the year until October 2013
2. Change the system time automatically; the software is permanently valid
3. Automatically cut off the network in case of update flash
4. Password protection
5. Support Windows XP, Windows 7 32 and 64 bit
6. New USB Drivers. Now it is compatible with the latest PCs which use Fresco Logic USB3 chipsets.
7. New more universal Airbag Coding Assistant.
8. New “Upload Debug/Log File” functions in Applications Dialog