I guess you are talking about one of the new italian scripts here on the forum, are you ?
You have to copy the complete script (that's what is on this code box)
and paste it into a new, empty file. For that you can use any standard texteditor like Windows notepad, then save this script to your Ant Movie Catalog scripts folder with a filename like wuz.ifs or SediciFilm.ifs - you just need to care for the .ifs extension, so that AMC can find the file. Run the script..
Or you can wait until the new script is downloadable from
http://update.antp.be/amc/scripts/ or via script UPDATE_SCRIPTS.