In the Connect Dialog with User Arranged Tree turned on, why do I not see the insertion marker when dragging sessions or folders?

The insertion markers will not display on systems that do not have the latest common control DLLs. The latest version of the common control DLLs may be downloaded from the following location:

http://www.microsoft.com/msdownload/ieplatform/ie/comctrlx86.asp

You should have Internet Explorer version 4.0 or later and download the version of the DLLs that corresponds to the version of Internet Explorer that is installed on your system.