I am Venezuelan living in Spain right now. In my country (Venezuela) like many other American countries we use the American Plugs (A and B).
I had/have the same problem, bringing equipment here, and when I travel to America....
Maybe, my personal recomendation, and is better (I think so) is to but the Europe-America adapter in an electronic store, the price is about 50 cents in Spain, and use it. If you want to keep permanently, use a fast glue and setup fixed
. Is the best my friend.
You don't transformer from 220 to 110 is you are using switching power transformer, because they are automatic 100-240, just you need a pin-plug adapter and the are very cheap.
I am talking about THIS:
http://ecx.images-amazon.com/images/I/4 ... SY300_.jpg