As far as I know nothing like sed is bundled with windows. However, sed is available for Windows in several different forms, including as part of Cygwin, if you want a full POSIX subsystem, or as a Win32 native executable if you want to run just sed on the command line.
Sed for Windows (GnuWin32 Project)
If it needs to be native to Windows then the only other thing I can suggest would be to use a scripting language supported by Windows without add-ons, such as VBScript.