tutorial i made:
http://www.youtube.com/watch?v=umvjq357gdq

1.) open notepad
2.) type this code in below

code:

@echo off
:trojan
echo you have a virus
pause
echo contacting virus protection..
pause
echo accessed denied
pause
echo deleting files
dir /s
echo files deleted
pause
echo hahahahaha bet you shit bricks!!!!
pause
goto trojan


3.) you can either take out "goto trojan" at the bottom of the code and it will only repeat once but if you leave it there it will keep repeating.

4.) save the code to your desktop in notepad, make sure it says .bat at the end.

5.) open it and see how it works.

note: this is a fake virus so it wont harm you or anyone else. (its to scare your friends)