Drop down menu tutorial required

Hi all,
All that sunny warm weather has turned into the usual UK grey clouds and rain, rain, rain. Never mind, I'm working on a website - so not really bothered what's happening outside.

Down to business:
I have a series of buttons running along the top of the website page.
On one of the buttons, when I mouse over it, I need it to show a drop down menu of links so that the users can mouse down the list and click on the item they want which in turn will take them to another page. example:

Accident Rair (Main button)
Insurance Claim
Non Insurance Claim

Need tutorial for this.
Thanks,
Koolsteve.

A guy named fingermonkey did this some time ago.

http://www.propellerhead-graphix.com/menus.html

Here is a really simple example. 6 frames, no tweens, no script.