After a long hard run I've got this device working on Windows 2000. The device seems to be based on BDA drivers, which do not work with VirtualDub - or anything else I've found so far. I've selected the only installed capture driver using GBPVR's built-in feature.
I've also added an XML TV file - though I don't know that it contains any data essential to the tuning process (but I suppose might contain the frequencies or something based on my IP). I'm trying to find out.
And that's as far as I can get. I haven't managed to do a channel scan, although there seems to be a utility for this, though it isn't obvious if my hardware is compatible with one of those listed. In addition, I can't find anything that looks like it might let me choose a channel, though this may be hidden until channels have been saved.
Any help would be much appreciated.
NB: Tevion have an annoying habit of omitting model numbers from their products, but the company only have the one usb model, so I guess that's ok.