Having trouble with mouse rollover

1

I’m very new to Flash MX and I’m having a problem which i’m sure someone can solve easily. I have two frames in the movie, and when the user puts their mouse over a button, i want it to switch to another frame. I’ve got it down pretty much using on(rollOver) and gotoAndPlay, but when you put your mouse over it, your mouse changes to a normal mouse to the button mouse over and over. I’m just wondering what I’m doing wrong.