title: How to disable "show previous versions" in the Open File dialog?
body: <p>I've got a program that's using an IFileDialog (standard Windows dialog) to open files.  And on some computers, it all works as expected, but on others, the Open button has an arrow with a dropdown menu that adds a second option, "show previous versions".</p>
  
  <p>A bit of research indicates that <a href="http://social.technet.microsoft.com/Forums/windowsserver/en-US/c74b9e69-4df6-437f-bdfc-b4f8237bdd9c/how-to-programmatically-enabledisable-previous-versions-of-files-on-windows7?forum=windowsbackup" rel="noreferrer">this is an OS thing related to System Restore</a>, and it can be disabled by turning off System Restore entirely.  But that would be <a href="http://blogs.msdn.com/b/oldnewthing/archive/2008/12/11/9193695.aspx" rel="noreferrer">using global state to manage a local problem.</a>  Is there any way to simply configure the dialog to not show the dropdown menu?</p>