Microsoft Windows Script 5.6
  Visual Basic Script Edition (VBScript) Version 5.6
  JScript Version 5.6
  Windows Script Components
  Windows Script Host 5.6
  Windows Script Runtime Version 5.6

Windows Script 5.6 for Windows XP and Windows 2000
http://www.microsoft.com/downloads/details.aspx?FamilyID=c717d943-7e4b-4622-86eb-95a22b832caa