Ensure registry DWORD value "JITDebug" is set to "1"
(Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Script Host\Settings\)
Open the File you want to run the script macro against.
Select from the menu "Tools" | "Script Macros" | "Play"
(Note: If debugger doesn't launch, replay script using "Play Last")
Window will launch your default script debugger
If you don't have a script debugger install, you can download a free copy of "Microsoft Script Debugger"
from (www.msdn.microsoft.com/scripting)