Simple roll over type thing- PLEASE HELP - NOOB

First off- thank you for bothering to read this. I am in a serious bind and will be forever grateful if ANYONE can help me.
I have a flash movie. It shows a main screen and then a simple menu on the right.

Here is my specigic problem. When you rollover a button I am trying to make the entire movie change. So- lets say it starts out showing a bunch of veggies. When you rollover the carrot, the veggie bunch should DISAPPEAR and show a separate picture of a carrot and info about the carrot.

I know this cannot be that difficult but I am seriously stuck.:h: Please help.