I Messed on with Sd/Cf etc a while ago for some Ds games and It works/worked as Un-intended
Anyway to get Mapped Drive/writer to be device output (Am sure I got nero to do it a couple of years ago) or maybe I was messing on with it and it did something else.
edit it must have been something else as trying again now and nothing is springing to mind
another edit, Actually I remember now. It was I wanted to build dvd-rom/iso from files on a networked machine using nero and from the source box in nero it was not possible to add files from a network, so i then mapped a drive from networked machine so that it showed up in nero's source browser so I could add the files etc.
I should imagine without remote desktop type thingy it would not be possible to utilise mapped drive as output from within ImgBurn as I understand it, it scans pci/ide bus etc for devices on host computer.