Install .Net Framework 3.5 on Windows 8 offline

Windows 8 is really fast and fluid to work with.  Most of the applications which work with Windows 7 also supports windows 8. But the problem arises when we need to install applications which needs .net Framework 3.5(includes .net 3.0, .net 2.0) support. By default .Net Framework 4.5 (includes .net 4.0)  is enabled in Windows 8. However .net framework 3.5 is not automatically enabled. It should be installed manually when demand arises. However there is no readymade application that installs .net Framework 3.5 on Double click. It should be done through Windows Features. Installation could be done either online or offline.