Specifics are must be ASP/VBScript & MSAccess database

What I'm looking for is I'm trying to create a business directory that will
show results depending on what is chosen in the category list (drop-down box).
Inside this Access database I have a table which holds these fields: Category -
Business - Address - Phone - Fax.

On my webpage want a drop-down menu that will hold a list of each of the
Category types listed in it. When I select an item from the Category list I
want my "webside table" to give me all the businesses in that selected
category.

Problem is, how do I do this? Everywhere I look I keep finding ways to
"auto-populate" my drop-down list. But that's not what i want to do. What I
want is to populate my webside table according what the drop-down list item
that is chosen.
Perhaps I'm wording it wrong in the searches, but each time I keep getting
lost. I've been trying this for a couple days straight and sadly not getting
anywhere.