On the ISO is not a tool or Serial Activation! All versions of Windows 7 are available at the installation
Microsoft Windows 7 Starter SP1 x86 Microsoft Windows 7 Home Basic SP1 x86 Microsoft Windows 7 Home Premium SP1 x86 Microsoft Windows 7 Professional SP1 x86 Microsoft Windows 7 Ultimate SP1 x86
Microsoft Windows 7 Home Basic SP1 x64 Microsoft Windows 7 Home Premium SP1 x64 Microsoft Windows 7 Professional SP1 x64 Microsoft Windows 7 Ultimate SP1 x64