Shoutbox

well now i need to know how to install them
it says :

How to use this script:
- Make sure you have Live Messenger and Messenger Plus! Live installed.
- Download the script, open it, accept the warning and press Import.
- Click on the Messenger Plus! logo in your contact list.
- Click on NickChange > Edit Names List, and add some names.
- Click on NickChange > Start NickChange, to get going.

1st : i got live and + live installed
2nd: i see a messenger+ logo and when i click it, it opens a window, but, it does not say nickChange > edit Names List...
where to search?
in a chat?
on my normal screen?
SCREENIE --->

if you can let me see where it is plssss do that

ty already