Hello all we are living in Sicily and

It depends where you are, and to be brutally honest, if you are going to start a business you need to be fluent in Italian - so you could use the commercialista bit as your first steep learning curve...  I have never met an English speaking commericalista, but there may be one round Taormina.  However, you need to do the main legwork yourself, it pays to know the law better than any professional as they are not legally responsibile for what they tell you. 

Hi. Where are you looking to setup your business? You can send me further details and i would be happy to helkp you; qad@flyingformations.com

I use studio del gaizo picchioni in Livorno. They have a totally bilingual service and I have found them to be efficient and relaible and a lot cheaper than the previous English one I used. They have a website and I speak to Judith Ruddock whom I recommend highly. They will do your IMU for you as well.