Dasat, gabicho: What you can do is send data through AJAX (check out the How do I FAQ, there are example of use listed).
The issue is you will need some server-side script (for example a PHP file) that will save/store those data. If your script is to make a new file on your server, then all is fine.
But this "just" depends on the type of server-side script you decide to use and this is unfortunately not something made with C2 and is something out of the scope of our forums.