I did Installation and the under message was showing when ever i am htting my domain.

 

Warning, for security reasons you need to delete the installation folder to make the website work properly. Once deleted, click here to open your website

go to your ftp program used to upload the phpmysport files and delete the installation folder from the web

From the Web, I didnt get where it is? Please help me.

Delete the installation folder with your ftp program !!