Help with Illustrator Script! Batch convert files including subfolders - please help! :)

Question

Hello,
I honestly have tried reading the other answers and researching to try to solve this problem.  I'm sorry for my ignorance in this area.  Please help!!!
I'm trying to make a script (for Illustrator CS2) that will batch convert several files to PNG files.  The source folder has several subfolders and I need the script to go into the subfolders and convert those files as well.  The destination directory should be an entirely separate folder but with the same hierarchy as the original source folder.
The script I have been using (that converts just as I need) is below.  The only problem is it doesn't do the subfolders.
Any help would be so amazingly appreciated!
ADOBE SYSTEMS INCORPORATED
Copyright 2005 Adobe Systems Incorporated
All Rights Reserved
NOTICE:  Adobe permits you to use, modify, and
distribute this file in accordance with the terms
of the Adobe license agreement accompanying it. 
If you have received this file from a source
other than Adobe, then your use, modification,
or distribution of it requires the prior
written permission of Adobe.
ExportDocsAsPNG24.jsx
DESCRIPTION
This sample gets files specified by the user from the
selected folder and batch processes them and saves them
as PNGs in the user desired destination with the same
file name.
// Main Code [Execution of script begins here]
// uncomment to suppress Illustrator warning dialogs
// app.userInteractionLevel =
UserInteractionLevel.DONTDISPLAYALERTS;
var destFolder, sourceFolder, files, fileType,
sourceDoc, targetFile, pngExportOpts;
// Select the source folder.
sourceFolder = Folder.selectDialog( 'Select the folder
with Illustrator files you want to convert to PNG', '~'
// If a valid folder is selected
if ( sourceFolder != null )
    files = new Array();
    fileType = prompt( 'Select type of Illustrator files
to you want to process. Eg: *.ai', ' ' );
    // Get all files matching the pattern
    files = sourceFolder.getFiles( fileType );
    if ( files.length > 0 )
        // Get the destination to save the files
        destFolder = Folder.selectDialog( 'Select the
folder where you want to save the converted PNG files.',
'~' );
        for ( i = 0; i < files.length; i++ )
            sourceDoc = app.open(files[i]); // returns
the document object
            // Call function getNewName to get the name
and file to save the pdf
            targetFile = getNewName();
            // Call function getPNGOptions get the
PNGExportOptions for the files
            pngExportOpts = getPNGOptions();
            // Export as PNG
            sourceDoc.exportFile( targetFile,
ExportType.PNG24, pngExportOpts );
            sourceDoc.close
(SaveOptions.DONOTSAVECHANGES);
        alert( 'Files are saved as PNG in ' + destFolder
    else
        alert( 'No matching files found' );
getNewName: Function to get the new file name. The
primary
name is the same as the source file.
function getNewName()
    var ext, docName, newName, saveInFile, docName;
    docName = sourceDoc.name;
    ext = '.png'; // new extension for png file
    newName = "";
    for ( var i = 0 ; docName[i] != "." ; i++ )
        newName += docName[i];
    newName += ext; // full png name of the file
    // Create a file object to save the png
    saveInFile = new File( destFolder + '/' + newName );
    return saveInFile;
getPNGOptions: Function to set the PNG saving options of
the
files using the PDFSaveOptions object.
function getPNGOptions()
    // Create the PDFSaveOptions object to set the PDF
options
    var pngExportOpts = new ExportOptionsPNG24();
    // Setting PNGExportOptions properties. Please see
the JavaScript Reference
    // for a description of these properties.
    // Add more properties here if you like
    pngExportOpts.antiAliasing = true;
    pngExportOpts.artBoardClipping = true;
    pngExportOpts.horizontalScale = 300.0;
    //pngExportOpts.matte = true;
    //pngExportOpts.matteColor = 0, 0, 0;
    pngExportOpts.saveAsHTML = false;
    pngExportOpts.transparency = true;
    pngExportOpts.verticalScale = 300.0;
    return pngExportOpts;

Answer 1

You can turn off some of the dialogs with: app.displayDialogs = DialogModes.NO;
#target photoshop
if (app.documents.length > 0) {
//Turn display dialogs off
app.displayDialogs = DialogModes.NO;
//=============Find Current Documents path================//
var CurrentPath = activeDocument.path;
//=============Establish current documents destination===============//
var folder1 = Folder(CurrentPath + '/' + 'Flats');
//=============Check if it exist, if not create it.============//
if(!folder1.exists) folder1.create();
//=============Establish current documents file name=========//
//Current filename without the extension
var CurrentFileName = app.activeDocument.name.replace(/\.[^\.]+$/, '');
//=============Modify current file name================//
var modifiedFileName = CurrentFileName +"Flat.psd";
//=============Establish save path====================//
var saveFileCurrentPath = new File(folder1 + '/' + modifiedFileName);
//=============Flatten document ====================//
activeDocument.flatten();
//=============Rotate  document if in 'Landscape'====================//
var myDocument = app.activeDocument;
if (myDocument.width > myDocument.height) myDocument.rotateCanvas(90);
//============Save File=======================//
psdSaveOptions = new PhotoshopSaveOptions();
activeDocument.saveAs(saveFileCurrentPath, psdSaveOptions, true, Extension.LOWERCASE);
//Close Document
app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);