Open Notepad and write this
@echo off
:A
Cls
echo MESSENGER
set /p n=User:
set /p m=Message:
net send %n% %m%
Pause
Goto A
and then save as "Messenger.bat" and close the Notepad
Step 1:
when you open that saved notepad file it will open as a file Messenger command prompt with this details.
Messenger
User:
after "User" write the ip of the computer you want to contact and then press enter.