How to access external folder jpeg files?

When I compiled the following code I had some problem.

private var image_loader:URLLoader;

public function loadImageData():void {
image_loader=new URLLoader(new URLRequest(“studentphotos\Blue hills.jpg”));
addChild(image_loader);
}

[COLOR=#ff0000]Compiler error[/COLOR]

Error #2044: Unhandled ioError:. text=Error #2032: Stream Error. URL: file:///C|/Documents%20and%20Settings/palanivelrajan/Desktop/todaymarch20/Under%5FProcessing/Studentdata/studentphotosBlue hills.jpg