Without the actual device in the computer and not being able to add it as a remote device, there is no way to configure a virtual channel. As you said, you can create it, you just cannot assign it to anything. The only things you can really "fake" are SC carriers and SCXI systems. With those generically added you can create virt. channels, but daq cards have to actually show up in devices and interfaces for the virt. channel to be able to select it. The only option is to create the configuration files with Virt. Channels and just add the pointer to the daq cards later.