Stop asking about CMD already. If you want to know what it can do, learn batch. If you seriously want to get yourself into a world of trouble, then google the net users hack. Download the puppy iso and burn the image to the disk, then boot into it, copy over the sam to your drive, and crack it with jtr or cain. Look, you don't own this network, you don't have any permission to audit it, and you're trying to crack it for unethical purposes. If you're trying to learn about hacking, that's the wrong way to go about it. If all you want is a step-by-step on how to break into this network, I'd be pretty disappointed if you found one here. These are ethical hacking forums, not black hat forums.