Load movie to a specific frame in external file, as2

The title of my main file is “Gabriel96.fla”. Inside this file I have a movie clip called “home movie”. Inside this movie clip i have a button called “Symbol 32”. Once this button gets clicked, I’d like it to go to frame “joe” which is inside a movie clip called “porrtfolio”, which inside a separate file called “portfolio55.swf”. I don’t seem to figure out the code for all this.

Thank you in advance.