We already have nice unix environment run at Windows : http://www.cygwin.com

Now M$ join the game also, look like it run faster, see if you interested to try: 

http://www.microsoft.com/windowsserversystem/sfu/downloads/default.mspx
http://www.interopsystems.com/tools/warehouse.htm

By the way, WinXP already provide a nice set of command line tools: http://www.networkclue.com/os/Windows/commands/index.aspx