How to install Tk.pm,LWP.pm?

[Prabahar Mosas]

   
Dear All, 
           How to install Tk.pm,LWP.pm? 
          I am new to perl, I did't know how to add 
module into perl. So if anybody know regarding my doubt. 
Please Mail me in simple manner.  My Perl version is 
5.8.4.