Need Desktop Shortcut Help

Subject: Making it easy for visitors to add a shortcut on their desktop to my website

Does anyone have advice on how to add a link (graphic, button or text) to a site, that when clicked, would create a shortcut on the user's desktop?

Perhaps it is similar to:

javascript:window.external.AddFavorite(document.URL,document.title)

Here's what I'm working with right now:

Add to Desktop

However, all this does is add the actual page to the desktop.

Any further advice much appreciated.

Texas

P.S. - Yes, I know about "See You Again Shortcut". The authorization certificate that pops up scares the hell outa' people!