Dim WSHShell
Set WSHShell = WScript.CreateObject("WScript.Shell")

' open maximized and wait
WSHShell.Run "notepad.exe", 3, true
' open minimized and wait
WSHShell.Run "notepad.exe", 2, true
' open normal and don't wait
WSHShell.Run "notepad.exe", 1, false

Set WSHShell = Nothing
WScript.Quit(0)