http://en.wikipedia.org/wiki/Local_Shared_Object

http://www.adobe.com/support/flash/action_scripts/actionscript_tutorial/actionscript_tutorial05.html

to change settings:

right click on any flash swf

or

http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager02.html

stored here:

• Windows XP:
  • For Web sites: %APPDATA%\Macromedia\Flash Player\#SharedObjects\<random code>\<domain>\<path – maybe°>\<object name>.sol
  • And Also: %APPDATA%\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys

• Windows Vista and later:
  • For Web sites: %APPDATA%\Macromedia\Flash Player\#SharedObjects\<random code>\<domain>\<path – maybe°>\<object name>.sol
  • And also: %APPDATA%\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys
  • For AIR Applications: unknown, likely similar to the above

SIMPLY turn the cursor into a hand
(over something that really isn’t a button, in this case it’s just a dynamic URLREQUEST function/link).

Nice and simple solution:

top of your AS3 package:
import flash.ui.Mouse;

in function reacting to mouse movement or loader success:
this.buttonMode = true;

private function fOnClick( e : MouseEvent ):void {
var request:URLRequest = new URLRequest(“http://www.google.com”);
navigateToURL(request);
}