LISTING 1:
start.bat

@echo off

if not "%OS%"=="Windows_NT" goto EXIT

BEGIN CALLOUT A
if not exist %windir%\system32\wscript.exe start /wait %0\..\wsh.exe /q
END CALLOUT A

BEGIN CALLOUT B
cscript.exe //nologo %0\..\logon.vbs 
END CALLOUT B

:EXIT
exit