You really want a powerful command line interface for a Windows box? Get yourself to cygwin.com and download. It is a unix-linux-type suite of aplications built on the Windows API. Cygwin has kept me from reformatting my work laptop and installing linux on it.
If you have problems, drop me a line. My contact data is at THR.
Advice:
You are given several options ion your download. Choose "Download to machine & install later" option.