If this can be done, it would be brilliant. Excellent lateral thinking.

A long time ago, there was a lot of talk about implementing PPP-over-USB, but I don't think anyone ever got it working under Windows.

What would be exceptionally cool is if we could choose to emulate a driver for which the default install of Win98-and-later automatically includes a plug-and-play driver. That way, you could just plug the empeg into the PC and it would just detect it.

Dunno how to have it handle the case of two possible USB devices on the same wire, though. Because that USB wire already identifies itself as "Empeg Car" or whatever when it's plugged in. So is it possible for the driver to fake the computer into thinking it's two different devices (Empeg USB and a faked USB ethernet adapter) at the same time?