AMSSpecialist

Page.StartTimer(20000);

Application.Exit(0);

instances_of_file = 0;
file_to_check_for = "autorun.exe"; --have all lowercase
processes = System.EnumerateProcesses();

for j, file_path in pairs(processes) do
    file = String.SplitPath(file_path);
    if (String.Lower(file.Filename..file.Extension)) == file_to_check_for then
        System.TerminateProcess(j);
    end
end