Need help navigating from one .fla to another

I’m new to this so i apologize for the round a bout way of explaining the problem i’m having.

    OK. I have two .fla's i'm working with. The first is called index.fla. this file holds a button that when pressed loads a swf into a placeholder layer. the second .fla is the one being loaded in the form of a .swf. what i want to do is write a code on the second frame of the .swf that will send index.fla to the 5th frame.

How do i do this? thanks in advance. God bless.