ok say your computer is in lan, like mine is right now. is there anyway that i can find the ip of the other computers. and also maybe the user names. i know that the net user command will not work over a lan network, will it?
Go to this site and the download cain & abel which is the best LAN hacking tool you will find, very easy to use and you will not only see the IP but also the Hostname and MAC address of each computer running on that network once you have activated the sniffer. If you do not understand how the program works then you can read the Help which has all the features described in a very short way. You can crack windows passwords and many other hashes with that. Cain even comes with winrtgen (Rainbow Tables Generator) that comes in very handy when using cryptanalysis method of password cracking. Astalavista
Oh yes, and I forgot to mention NetTools by Relix, that is also a very powerful tool. It is unfortunately only download as torrent.
On cmd if you type net use. It will show other computers on your network. You do have access to CMD right?