ok, did you look in the startup sequence to also see if the GVP HD card is recognized? If you have any other expansion boards they'd be listed here as well.
If you have never done this before, just know that you will not get a name but a code for the GVP HD card. What that # is I don't know off hand

but if it is the only addon board you have then it will either be blank or show you the one (or two if it also has RAM on it) GVP card.
And the reason yo'd put in the 3.1 WB disk is to let it boot off of it and see what Icons/drives come up.
Good luck!