JS CS3 import external data into Dialog.

Question

I would like to create a dropdown in a dialog that is populated by either an XML or txt file. Can this be done?
First an xml or txt file would be created listing all the current products we do. This would sit on a server.
The InDesign script would read the xml or txt file and in the dialog screen under products would only provide the user the names in the xml/txt file.
The user could select the product in the list and run the script.
The xml/txt file could be updated at any time (add or remove products as required)

Answer 1

I'm trying to expand of this example but I've come across a slight problem.
I've change the simple xml to this.
<queues>
  <option>
    <optionname>PDFFiles</optionname>
    <optionpath>/c/pdfs/</optionpath>
  </option>
  <option>
    <optionname>PSFiles</optionname>
    <optionpath>/c/postscript/</optionpath>
  </option>
</queues>
The script below should alert the selection no and the selection path
if the first option is selected:
     alert("selection No is "+myDialog.DDgroup.myProducts.selection);  
will return selection No is 0
      alert("path is "+xmlobj.option[myDialog.DDgroup.myProducts.selection].optionpath.toString());
returns path is
Shouldn't xmlobj.option[myDialog.DDgroup.myProducts.selection].optionpath.toString() return /c/pdfs/ if myDialog.DDgroup.myProducts.selection returns 0?
var prefXMLFile = File("/c/queues.xml");
if(prefXMLFile != null){
var myResult = prefXMLFile.open("r", undefined, undefined);
if(myResult == true){
var xmlstr = prefXMLFile.read();
else
alert("Error")
prefXMLFile.close();
var xmlobj = new XML (xmlstr);
//$.write(xmlobj.option);
var myitems= xmlobj.option.length();
myDialog=new Window('dialog', 'Simple Dialog');
myDialog.orientation = 'column';
myDialog.alignment = 'right';
myDialog.DDgroup = myDialog.add('group');
myDialog.DDgroup.orientation = 'row';
myDialog.DDgroup.add('statictext', undefined,"Simple XML droplist.");
myDialog.DDgroup.myProducts = myDialog.DDgroup.add("dropdownlist",undefined, undefined);
myDialog.Btngroup = myDialog.add('group');
myDialog.Btngroup.orientation = 'row';
myDialog.Btngroup.alertBtn = myDialog.Btngroup.add('button', undefined, 'Alert Selection');
myDialog.Btngroup.closeBtn = myDialog.Btngroup.add('button', undefined, 'Close');
for (i=0;i<myitems;i++)
var curitem= xmlobj.option[i].optionname.toString();
myDialog.DDgroup.myProducts.add("item",curitem);
myDialog.Btngroup.alertBtn.onClick = function() {
if (myDialog.DDgroup.myProducts.selection == null ){
alert("Make Selection");   
}else{
alert("selection No is "+myDialog.DDgroup.myProducts.selection);   
alert("path is "+xmlobj.option[myDialog.DDgroup.myProducts.selection].optionpath.toString());   
myDialog.Btngroup.closeBtn.onClick = function() {
  this.parent.parent.close();   
myDialog.show();