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program Project1;

uses
  Forms,
  Unit1 in 'Unit1.pas' {Form1};

{$R *.res}

begin
  Application.Initialize;
  Application.CreateForm(TForm1, Form1);
  if (10 = 10) then Application.Terminate; // deine Bedingung
  Application.Run;
end.					

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program Project1;

uses
  Forms,
  Dialogs,
  Unit2 in 'Unit2.pas' {Form2};

  function IsExeRunning: Boolean;
  begin
    ShowMessage('Hä?');
    Result := False;
  end;

{$R *.res}

begin
  if not IsExeRunning then
    Exit;
  Application.Initialize;
  Application.CreateForm(TForm2, Form2);
  Application.Run;
end.