Creating a search application

I am supposed to design a Flash application. Part of this application consists of a search window. It is similar to your search window on a DVR. When you want to find a specific show or movie to record, you cycle through the letters and type it into the search box. As you type, results are instantly posted. Once you see the one you want, you can simply scroll over and select it. You can move in and out of the search box as needed.

I don't know where to begin building this thing. Any tutorials available? Should I primarily use Actionscript?

BTW, I am using Adobe Flash CS4.