I am not certain of the letter layout of an Italian keyboard but you should
be able to. If it is different layout than the English keyboard you might
want to get some stickers for the keys so you remember what the keys are in
the different languages. Also, after you install you can add the Italian
keyboard layout too and then use L-Alt + L-Shift to switch between keyboard
layouts.
To add another keyboard layout or Input Method Editor (IME):
1. Open Regional and Language Options in Control Panel.
2. On the Languages tab, under Text services and input languages, click
Details.
3. Under Installed services, click Add.
4. In the Input language list, click the language for the keyboard layout or
Input Method Editor (IME) you want to add.
5. Select the Keyboard layout/IME check box, if multiple options are
available, and then click a service in the list.
If Keyboard Layout/IME is the only type of text service available, click
an option in that list.
Notes:
To open Regional and Language Options, click Start, click Control Panel, and
then double-click Regional and Language Options.
There may be only one keyboard layout for some languages.
To add an IME, you must have installed it on your computer first.