How to Change Default Path of File Open Dialog?

I'm writing a script that allows me to do some basic imposition within InDesign CS3, and one of my tasks is to open a dialog allowing the user to select a file to place. I'm currently doing this with:

var file = File.openDialog("Choose a File:");

The problem seems to be when navigating to a network drive through a shortcut. For some reason, the dialog sees it as a file, and returns that path from the dialog, rather than navigating to the folder location. I'm assuming this is just a bug in the dialog, and my initial thought was to check to see if the returned file has a correct extension, and if not, display the dialog again, opened to the returned path location. However, I can't seem to find a way to change where it opens by default; openDlg() only has parameters for String prompt, var filter, and boolean multiselect. I'm not familiar with Javascript, so I don't know whether this is something with a general solution, or particular to InDesign.

EDIT: If anyone's interested, here's the final code I used to get around the problem:

var path = new File("~/desktop");
var file = path.openDlg("Choose File:");
while (file.alias) {
    file = file.resolve().openDlg("Choose File:");
}

Basically, checks if it's a shortcut (alias), and if so, resolves the target and displays the dialog again. Kind of a hackish way to go about it, but it works just fine. May want to add some null handling i开发者_开发技巧n there, too, though, as if the dialog is cancelled, null is returned.

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Have you tried getting a handle to a file/directory that you want by default and calling fileHandle.openDlg() ?

http://forums.adobe.com/message/1109421#1109421