External images in a template

First to say hi to all members!
I’m newbie in flash, and my wife is bodering me to make eye catching site for her wedding dresses salon, so I downloaded template from monstertemplate’s site No 15716, cause main feature of the site will be images, and I’ve red “Flash for dummies” (no laughing please:)), so I managed to do all design changes to customize template, and no big actionscript changes, but template is built to have internal images, and for us internal images are not an option, and problem is that I don’t understand that segment of AS. I would like to load images to that specific position, and have that same effects with large image when I hit thumbnail. I atached scripts.
Every help is appriciated, thanks in advance.