How to Install Advanced find / replace plugin for Gedit in Linux mint 14

My friend told me he can find and replace text in multiple file using NotePlus. so i google and found a few link for this.

The first one i try, but not success.
First Link

So i try the second link , this time it works perfectly.

this is how i did as instructed .

i open a terminal and paste the following command

cd
wget http://advanced-find.googlecode.com/files/advanced_find-0.5.1.tar.gz
tar -xvf advanced_find-0.5.1.tar.gz
cd advanced_find-0.5.1
./install.sh

next it ask me for my password.

then i open gedit and go to Edit/Preference/Plugins and select the Adcance/Replace plugin
that is it. i am done.