Load images from my hard drive

Hi!
I was looking into a readymade flash CS4 project.
It’s kind of slideshow for some photos.
I wanted to modify the Action Script in order to use the pictures in my computer’s hard drive.

The code that has been used there in that project is something like

var gal_uno_uno=“http://infernotech.co.cc/meracup.jpg”;
var gal_uno_unoth= “http://infernotech.co.cc/meracup.jpg”;
var gal_uno_dos=“http://farm2.static.flickr.com/1073/756274318_d3bc6b17c9.jpg”;
var gal_uno_do= “http://farm2.static.flickr.com/1073/756274318_d3bc6b17c9_s.jpg”;
var gal_uno=“http://farm1.static.flickr.com/217/485076305_fb0eb729e9.jpg”;

but, I don’t want to specify the url of the images. Instead I want to pick up these images from my hard drive.
Any help?