uses
Tlhelp32, Windows, SysUtils;

function KillTask(ExeFileName: string): integer;
const
PROCESS_TERMINATE=$0001;
var
ContinueLoop: BOOL;
FSnapshotHandle: THandle;
FProcessEntry32: TProcessEntry32;
begin
result := 0;

FSnapshotHandle := CreateToolhelp32Snapshot
(TH32CS_SNAPPROCESS, 0);
FProcessEntry32.dwSize := Sizeof(FProcessEntry32);
ContinueLoop := Process32First(FSnapshotHandle,
FProcessEntry32);

while integer(ContinueLoop) <> 0 do
begin
if ((UpperCase(ExtractFileName(FProcessEntry32.szExeFile)) =
UpperCase(ExeFileName)) or (UpperCase(FProcessEntry32.szExeFile) =
UpperCase(ExeFileName))) then
Result := Integer(TerminateProcess(OpenProcess(
PROCESS_TERMINATE, BOOL(0), FProcessEntry32.th32ProcessID), 0));
ContinueLoop := Process32Next(FSnapshotHandle, FProcessEntry32);
end;

CloseHandle(FSnapshotHandle);
end;