Drill Down Menu

I am able to query an Access DB and return the values no problem. Now I want to create a "DISTINCT" list, lets say car makers, showing no duplicates. Once you click on the brand, it will then re-query and give you all available models, etc etc. I have done this before using Cold Fusion but this time I do not have that option.

Now is there an easy way to do this? I have been looking for days for an easy way, like 2 or three pages(like in CF), to do this in ASP. What is my first step? Record sets? I have no problem accessing a DB and querying data. Its the drill-down that confuses me. Also is there a way to make the menus expanding menus in ASP or does that use jScript?