cs4 as2 using variable in file path

ok so I have had this lil problem posted on another site and it stumped them so I figured I would bring it here.

I am using the mdm extension to build a skinable browser for Brym’s desktop hud application (http://www.desktophud.com)

I am loading variables from a text document to get the folder name and image type of the skin.

I use this code to load the variables

config = new LoadVars();
config.load(“Browser skins/config.txt”);
config.onLoad = function(success) {
if (success) {
// trace(success);
[COLOR=Black][COLOR=#0000FF]skin_output.text = this.selected_skin+", "+this.skin_method[/COLOR];[/COLOR]
}
};

I know it works cause I see the vars info in my text box.
What I am having trouble with is the next bit

if (this.skin_method == png) {
//skin loading
//nav and overlays
loadMovie([COLOR=#0000FF]“Browser skins/”+this.selected_skin+"/navbar/navbar.png"[/COLOR], navbar);

^ were selected_skin = default-skin

and I have also tried

if (this.skin_method == png) {
//skin loading
//nav and overlays
loadMovie([COLOR=#0000FF]this.selected_skin+"/navbar/navbar.png"[/COLOR], navbar);

^were selected_skin = Browser skins/default-skin.

I also tried things like

var skinFolder = this.selected_skin;

if (this.skin_method == png) {
//skin loading
//nav and overlays
loadMovie([COLOR=#0000FF]skinFolder+"/navbar/navbar.png"[/COLOR], navbar);

all of which give me this error were the variables return undefined.

file:///C|/Documents%20and%20Settings/Jaden/Desktop/hud/huds/undefined/navbar/navbar.png’

I am really stumped here and would be grateful for some pointers.