I'm not sure of the correct terminology, but here is what I'm looking to develop:

Like monster.com or any of the major job search companies, I'd like to create a database connected to an online form, with two dropdown menus, which will provide filtered search results upon submit.

For example:
First dropdown menu: Arizona, Alaska, Alabama
Second menu: Carpenters, Plumbers, Auto Repair

If the user were to select Arizona, Carpenters and click submit, the next page would be a listing of all the Carpenters in AZ.

I believe I'll have to incorporate PHP/MySQL, but I'd like any advice or resources that might be available.

Thank you!