The G-1 adapters look right to me. Look at this diagram:
http://www.adaptelec.com/index.php?m...roducts_id=304
The two with the checkmark are what you'll most commonly find in Italy. That middle prong is a ground plug, so things will obviously work without it, but you won't be grounded so be careful.
FWIW, I've also seen plenty of the CEEE7/4 "German" plugs (top row, #3 on the diagram). They're usually for higher wattage devices and small appliances, like toasters and blowdryers.
PS don't bring your blowdryer to Italy. That adapter you have is not a voltage converter, and you'll fry the blowdryer unless it can work on 220V. Use what's in your hotel room instead.