I have never used it, but supposedly Windows PowerShell is pretty good. But Windows 9x/XP/2000 don't have it, and no matter how great the shell features are, it's severely crippled by the fact that Windows has never had anything like your typical Unix userland. Meaning that most of the CLI programs still have their old and crippled DOS CLI interfaces, none of which were ever made to be easy to combine into anything more than a simple .BAT file.