How to install Greasemonkey and cookie injector script in firefox (2013)

How to install Greasemonkey and cookie injector script in firefox (2013) :-

 Overview :-
                              Greasemonkey allows you to install several useful scripts. (As it is more useful in hacking facebook account with cookie sealing :p).Today,I am going to show you How to install Greasemonkey and cookie injector script in firefox.In next post I will show you how to use it and How to hack facebook with it .So just stuck with this site... :p
Now without wasting much time moving on to How to install Greasemonkey and cookie injector script in firefox..
What things will be needed ???
                                                                        Things you will need are given below :-

• Microsoft windows xp or later... (As I am using this OS ;) )
• Mozilla firefox v.21 (May be this Add on will not work in higher versions )
•  And some Computer usage skill :p

 Procedure :-
                              Procedure for How to install Greasemonkey and cookie injector script is given below :-
STEP # 1 :- First download & install Firefox here, if you don't have one.If you have jump to Step # 2.

 

  STEP # 2 :- Now install Greasemonkey from here ....

STEP # 3 :- Now install cookie injector script  from here .

STEP # 4 :- Now if you want to inject cookie for a website press "Alt+C" and a pop-up will appear..
Note :- A pop-up will appear only if you have cleared your own cookies from your browser for that site.. For example "Facebook.com"

Thanks for your Time & Reading.....