Moving an HTML Form to Flash - how can I do this?

I hope someone here can help me out with this one.

I’m looking to convert the new/used car search box on this page:

http://www.auffenberg.com/wasp/splash.asp

into Flash.

I was thinking of using an XML form, and I still think that would work, but I’m having some (probably elementary) trouble figuring out how to get the comboboxes and radiobuttons to link together.

I originally thought I could just transplant the form into Flash, but I quickly realized that I had no idea how to actually do that.

Can someone help me out with this? I would be greatly appreciative.