Had a play with it, actually it\’s really cool, kind a like unix bash but windows style as in very easy. apparently windows vista don\’t come with it, but they have ver for it , you can download and install.
I played with the xp ver of that I tried few things and you can easly work on it, and help is their too. and the man command works as well. if ur use to bash it\’s just lost easy here is the link