DownloaD The Ip Scanner !
First Go to this Site www.angryziber.com
Then Go To www.whatismyip.com
Get Your Ip Address !!
Then Scan Ip From 1-255 Range
You will find Some Computers ..
Then Just Copy their Ip Address,Mac Address And Computer Name
Then when they Go Offline use there Mac address via changing it with Kmac or MAC Address Changer v4.7
Rename your Computer n Workgroup
Then Restart Your Computer ..
Done !!
Note:When you are Changing IP please Unplug the Cable
Softwares Needed ..
MAC Address Changer 4.7
http://www.download.com/Technitium-MAC-Address-Changer/3000-2085-10554920.html?part=dl-Technitiu&subj=uo&tag=button
Kmac
http://www.neset.com/download/?k-mac.zip