Depending on your bank, it may be a good idea to call them before you go and let them know you will be using your card out of the country. Some folks have had cards rejected overseas by automatic programs that track your "typical" usage. Just call customer service and they will ask when and where you will be travelling. I have never had a problem.

One other thing - be sure your pin is numeric only. Some cards in the US allow letters, but many/most ATMs in Europe accept numbers only for pins.