This works for me...

set shell = createobject("wscript.shell")
shell.run "C:\WINDOWS\Desktop\temp.msg"

--
Michael Harris

  Hello,
  I have an application in which I send VBScript commands to
  Outlook 98 via OLE.

  I want to tell Outlook to display a .MSG file - in the same way as if
  the user had double-clicked on the filename in Windows Explorer. I
  can't see how to do this.

  I can open the file with Outlook's CreateItemFromTemplate method but
  that doesn't display the file in the same way (it creates a new
  e-mail).

  This must be something that's very easy to do but I really can't see
  how.

  Any ideas?

  Thanks
  Nick