Drop down menu + Database .. got questions please help

[admin]

I found this code for a linked drop down menu

<!-- m --><a class="postlink" href="http://developer.irt.org/script/1046.htm">http://developer.irt.org/script/1046.htm</a><!-- m -->

I am trying to tie this menu into my ASP database so that when a user makes their selections it dynamically builds the code for the database query.

Here is a sample of the code design setup of my site <!-- m --><a class="postlink" href="http://www.boostdriven.com/productlist.asp?cat=8&car=1&code=1D&year=1999">http://www.boostdriven.com/productlist. ... &year=1999</a><!-- m -->

Cat=8 (Category of Product)
Car=1 (Vechile Make)
Code=1D (Vechile Model)
Year=1999 (Vechile Year)

Basically im trying to make it so that I start with a set Address like

<!-- m --><a class="postlink" href="http://www.boostdriven.com/productlist.asp?cat=8">http://www.boostdriven.com/productlist.asp?cat=8</a><!-- m -->

And then the menu adds the Car, Code, and Vechile sections

But want I understand from talking to a couple friends that kinda know javascript is that script above is for a menu with direction set in the code not in a database. What can I do about this ... is there a better code out there that someone knows

Im totally lost an frustrated with this thing .. spent the last 3 days searching google for an answer and would be extremely appreciative if someone could please help me

Thanks
Dane