Flash CS3 help please...?!

Hi,

I’m very new to Flash CS3 and have set myself the task of creating a flash based website, with the same functionality as http://www.madethought.com/

I just wondered if anyone would be able to help with creating the drop down menu - I believe I should be exploring rollovers/rollouts and also applying easing effects, however I have no idea what kind of actionscript to use.

Any help would be very much appreciated.

Thanks!