Thread:Project:Support desk/tableedit installation

I am trying to install tableedit extension for my wiki.

I have installed Apache, mysql,myphpadmin,mediawiki succesfully which are working fine. I am new to mediawiki and php as well. Can anyone please explain me how to install tableedit extension given on the link

http://www.mediawiki.org/wiki/Extension:TableEdit

I have downloaded the extension and extracted into the extension folder of mediawiki. After that I am not getting what I have to do.

many Thanks.