OK...I don't understand how I can do this-

I can get a reference to a prior instance of Internet Explorer using
Shell.Application, then take it over.  The following works; if I have an open IE
window, I can grab it with this script piece and send it where I want.

Doesn't this violate something fundamental?

set oSA=CreateObject("Shell.Application")
set cWin = oSA.Windows
for each Win in oSA.Windows
set oIE = Win.Application
next
oIE.Navigate " http://www.*-*-*.com/ "

No, since you as the user have initiated the action by executing a script to use the Shell.Application object in a trusted environment.  It's just an automated way of typing a new url in address box of an open IE instance and pressing enter.

--
Michael Harris
Microsoft.MVP.Scripting
Seattle WA US
--

As I posted, it occurred to me that this did look like browser re-use...

Is there any way to manipulate this to access other applications currently
running?

No, since you as the user have initiated the action by executing a script to use
the Shell.Application object in a trusted environment.  It's just an automated
way of typing a new url in address box of an open IE instance and pressing
enter.

--
Michael Harris
Microsoft.MVP.Scripting
Seattle WA US
--

No...  

The Shell App's Windows collection exposes only WebBrowser based windows "owned by the shell" (which include IE browser windows and Windows Explorer windows).  If an app hosts a WebBrowser control or mshtml.dll directly (like mshta.exe does), they are *not* visible in the Windows collection, nor are conventional application windows.

--
Michael Harris
Microsoft.MVP.Scripting
Seattle WA US
--