Preloader to protect swf?

Question

Hi All,
Newbee question, I have a games website and I want a preloader to protect my flash games from being downloaded easily.
I have found heaps of preloaders that work on the time line of game but offer no protection. Does anyone know where I can get a sample code for this or where I can buy a preloader from so that it loads before the game and if someone tries to save the page they get the preloader instead of the SWF?
A  flash designer I know said its possible but hasn't got time to create one. He gave me this code in a FLA but when I embedd the swf in to the site it doesn't load anything just displays the preloader. Im sorry this is a really novice question, been working on this project for a year + now so your advice would be really helpful to me :-).
This is the code he used on the preloader he made previously
function setProgress(num)
    _root.percentDone = int(num);
} // End of the function
var methodName = "setProgress";
var instance = null;
var method = setProgress;
var wasSuccessful = flash.external.ExternalInterface.addCallback(methodName, instance, method);
this.attachMovie("root", "obj", 1);
obj.progress.bar._xscale = 0;
obj._y = 0;
obj.onEnterFrame = function ()
    if (_root.percentDone != undefined)
        var _loc3 = Math.round(_root.percentDone);
        this.progress.bar._xscale = _loc3;
        if (_loc3 == 100)
            removeMovieClip (this);
            delete this.onEnterFrame;
        } // end if
    } // end if
stop ();

Answer 1

Since you will be loading AS3 files, you will need an AS3 preloader, otherwise, an AS2 preloader such as what you showed will fail in trying to an AS3 file, which is probably what you encountered in trying it.
Here's a link to an AS3 preloader tutorial which I believe does what you want... loads the file separately...
AS3 Preloader
http://www.gotoandlearn.com/play.php?id=85
but just so you aren't fooled by it all... When someone is playing your game, they have already downloaded your game.  So your protection is really only protecting your files against those who are either too lazy or lack the knowledge of how to get the file from their cache.  But some protection is often better than none.