delphi Disable_UAC_Vista

procedure RunAsAdmin(hWnd : HWND; aFile : String; aParameters : String);
Var
 Sei : TShellExecuteInfoA;
begin
 Fillchar(sei,SizeOf(sei),0);
 sei.cbSize := SizeOf(sei);
 sei.Wnd    := hWnd;
 sei.fMask  := SEE_MASK_FLAG_DDEWAIT or SEE_MASK_FLAG_NO_UI;
 sei.lpfile := PChar(aFile);
 sei.lpVerb := 'runas';
 sei.lpParameters := PChar(aParameters);
 sei.nShow := SW_SHOWNORMAL;
 if not ShellExecuteEx(@sei) then
  RaiseLastOSError;
end;

if OpenDialog1.Execute then
 RunAsAdmin(self.Handle,OpenDialog1.FileName,'');