Simple button w/ pop up text help

I’m pretty new to all this and, believe it or not, used to know how to do this basic stuff, but that’s long gone from memory… I just need to learn how to create a basic button that is text and when you move the cursor over it, a text description fades up. When you click on that button, it takes you to another page (not even a Flash page, but simple HTML!). I know this is easy, but all the tutorials and lessons tell how to create a button, but not how or where to create the movie for the fading up text. And then how to link it to that movie. Would be most humbled if someone would spell this out for me as my little head’s about to break open.

I’m using Flash MX.