Error in installing the Visual Studio Web Development

Hello I fed up with the error I am getting at the time of installing the Visual Studio Web Development, and I am not getting where the problem is occurred and refer the error image and provide an easy solution. Thank You.
Error:
You must enable Visual Studio Web Development Feature in Visual
Studio 2010 or install Visual Web Developer 2010 Express before you can install Visual Studio 2010 SP1.
To enable Web Development Feature in Visual Studio 2010, refer to Visual Studio 2010 help.
To install Visual Web Developer 2010 Express, please use Web Platform Installers products list or search box.
OK
