Transition from my firefox extension to a Flash Builder desktop app

Question

Trying to make a slow transistion from my firefox extension to a Flash Builder desktop app.
Okay i'm not familiar on how to go about this I have js code that lets my app sync it self with the lates build it looks for a new version number which is in a txt file. Inside the txt file I have 0.0.0 so evertime I change the version number to 0.0.1. The app checks for new updates and sees the txt file has a new version number and start to pull in the zip file and extrudes the zip into the directory.
I can't get my head around on how to modify this code ["@mozilla.org/extensions/manager;1"].getService
to look in the root directory of my Flash Builder app.
function Xcalibur_Sync(){
    document.documentElement.getButton("accept").disabled = true;
    var Cc = Components.classes;
    var Ci = Components.interfaces;
    var url = xcaliburGetUnicharPref("extensions.xcalibur.downloadurl");
    var Step1 = document.getElementById("xcalStep1");
    var Step1done = document.getElementById("xcalStep1Done");
    var Step2 = document.getElementById("xcalStep2");
    var Step2done = document.getElementById("xcalStep2Done");
    var Step3 = document.getElementById("xcalStep3");
    var Step3done = document.getElementById("xcalStep3Done");
    var Step4 = document.getElementById("xcalStep4");
    var Step4done = document.getElementById("xcalStep4Done");
    var xcalSyncDone = document.getElementById("xcalSyncDone");
    var progressMeter = document.getElementById("xcalProgressMeter");
    var progressPct = document.getElementById("xcalProgressPct");
  // Get Xcalibur version and location
    var GUID = "[email protected]"
    var gExtensionManager = Cc["@mozilla.org/extensions/manager;1"].getService(Ci.nsIExtensionManager);
  //var currentVersion = gExtensionManager.getItemForID(GUID).version;
    var currentVersion = xcaliburPrefs.getCharPref("extensions.xcalibur.installedversion");
    var xcaliburdir = gExtensionManager.getInstallLocation(GUID).getItemLocation(GUID);
    var file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFile);
    file.initWithPath(xcaliburdir.path);
    //Step 1 - See if an update is available
    Step1.setAttribute("hidden", "false");
    var req = new XMLHttpRequest();
    req.open('GET', url+"CRV.txt", false);
    try{
        req.send(null);
    }catch(e){
        alert("Cannot get update information from "+url+"CRV.txt\n"+e.toString()+"\n\nSync aborted ...");
        window.close();
        return false;
    }//try
    if(req.status == 200){
        var CRV = req.responseText;
Any Ideas?
Thanks,
Ish

Answer 1

Have you taken a look at the documentation on updating AIR applications?
http://help.adobe.com/en_US/AIR/1.5/devappsflex/WS5b3ccc516d4fbf351e63e3d118666ade46-7ff2. html
Or is it something else you wish to do? You can access the directory where your app is installed by looking at File.applicationDirectory and you can hit a URL by using URLRequest.
-Anirudh