Good answers hootoo - I remember this being an issue for me way back when - I just gave up and pulled the card as I really had no use for it....
But your theorizing makes sense - having both the .inf file and the .sys
driver means when you get asked for the
driver you point to the ./inf file (like normal) and it then tells the system where the .sys file is *and* gives it parameters on how to use the .,sys file.
Very clever.