So we have a new hire, just graduated from grad school. Since he only uses *nix in school. He is kind of lost in windows's command prompt. What exactly can I do in windows command prompt?

WindowsXP/Windows Server 2003 ships many many command line tools. There is a help file called ntcmds.chm, which lists all the available command line tools, and detailed help for each tool. Type “hh ntcmds.chm” in your command prompt to see it.

To my surprise, not many people knows about this file.