Ciao Leonida12,
[OT]
we are glad the distro receives positive feedbacks by users!
I'm answering in english because the forum is participated by users from various parts of the globe, so writing in italian is not the most "portable" choice... it would cut away a good slice of users which maybe would help you if they understood the question.
This being said, if you have problems with english language we'll switch back to italian mode.

[/OT]
To stay on subject, the forum is full of this kind of threads, and the web too... it's a common issue.
We generally recommend to correctly install and patch the compat wireless drivers. If this operation fails there's little we can do IMHO.
If you followed the aircrack guide on how to have your wifi card working and it didn't work i think it's an hardware issue, no distro misconfigurations or so... maybe try aircrack on other distros too, and if it behaves the same it's likely an hardware problem.
You can try to ask on aircrack official support channels, (irc, forum...) they know for sure more than us on the topic.
Or just buy a well supported wifi adapter.
Hope you'll solve!
Bye and have fun!