Anybody know how to remove unused virtual network adapters in Windows 7

[jgnetworksecurity]

Uninstalling and Deleting Virtual Network Adapters in Device Manager does nothing when the network adapters are virtual and created through Oracle VirtualBox. I have over 20 unused virtual network adapters that were created from using VirtualBox and reinstalling it a few times. I am most likely looking for the correct entry in the registry that will remove them. I have tried searching the registry and they are in so many places, I haven't been able to pin down the correct keys to delete. http://superuser.com/questions/465169/virtualbox-reinstalling-updating-has-left-me-with-too-many-network-adapters-hI have also published the question in other forums, and I am still waiting for an answer, so I realize that this may be a tough nut to crack. Hopefully someone has some experience with this problem.