Given up.

Nothing in the inf files.

Old hard drive is in new machine but reveals nothing.

I found a Hauppage driver that appears to do half the job but not enough to let the card properly identify itself - now it calls itself a Hauppage which may or may not be right.

PC Wizard does not tell you what the hardware is, just that it needs a new driver and then it wants a subscription to help you downoad the right one.

Some time when I am bored I'll rip the card out again and try it in a W98SE machine.