We're running Windows 7 Enterprise (x86) and when installing Cisco IP Communicator 7.0.5 (& 7.0.2.0) we receive 'Windows Security' prompts. The below is from the 7.0.5 installation that appears to be for the 'Cisco Systems Network Protocol', which I presume includes (?) the 'NDIS Intermediate Filter Driver'.

I'm running the install using the following command line:
"CiscoIPCommunicatorSetup.exe" /s /v"/qb /l*v c:\Cisco-IPCommunicator.log /norestart"
I'm sure the command line is fine, and this is more of a Windows setting, but has anyone experienced this? Is there a clever way of suppressing this prompt, or temporarily disabling Driver Signing just for the software installation?
Thanks all.