It's just a little thing, at one point while installing Helena, you can read some "tips" under the installation bar. One of them, the one related to "Mint is an OS which can be installed beside other OS'.." (or something similar) is stated in English even if the selected language is Italian. If you provide me the complete text (which I didn't write down..) of that part I'll gladly translate that part into Italian for you.
I also offer my time and will for any "English into Italian" translation. PM me if you consider my support, someway!