Search powered category tables

Lil306

I'm busy trying to work out how to design this, I'm looking at selling computer parts and want to use a category table to sort out the selections via menus - submenus with a final selection at the end

How are these written, javascript, css, ajax ?

I'm looking for one which is similar to ebays category selector when your creating a listing.

Additionally, forgot to mention. It needs to point into a live "database" can be whatever, .csv .mdb .txt .xls as I want it to look at products when they are available and not just a list of products that are available at a later date.