Hi everyone,
as I told before the resolution needed to be fixed, and I've installed the USB driver again. Now I'm (almost) back to the previous step, that is, no network card (wired or wireless, some problems with the webcam (I remember that at the first post-install, when configuring the user info, it worked and I shot an image for the account with it, now it's apparently broken).

After installing iAtkos v7 I applied several updates (from the web):
- Safari
- Security updates
- Quick Time
- System updates (after this one I had to apply the two fixes, screen and usb)
- Java (two updates, 6 and 7)