I have the following procedure to detect if an application is running and
registers it:

Sub DetectExcel()
Const WM_USER = 1024
Dim hWnd as Long
hWnd = FindWindow("XLMAIN",0)
If hWnd = 0 Then
Exit Sub
Else
SendMessage hWnd, WM_USER + 18, 0, 0
End If
End Sub

This obviously applies to Excel. How do I accomplish the same thing in terms
of Word?

Thanks,
Bill