Open browser window button inside an mc

Hi there,
a very simple question.
I´m makin the “open browser window” tutorial but in my file i have the button that triggers the html pop up , inside a movie clip . The entire code to to attach to the button is :

on (release) {
//customize the window that gets opened
// 0 equals NO.
// 1 equals YES.
address = “http://www.kirupa.com/modular/pop-up.htm”;
target_winName = “kirupa”;
width = 400;
height = 300;
toolbar = 0;
location = 0;
directories = 0;
status = 0;
menubar = 0;
scrollbars = 1;
resizable = 0;
//sends data back to the function
openWinCentre(address, target_winName, width, height, toolbar, location, directories, status, menubar, scrollbars, resizable);
}

I know i need to use _root something but is not gotoAndPlay, is it getUrl ?
I´m lost.
Thank you People for your help!!!
Andrea.