I never remember how to dial someone outside the U.S. so I'm putting it in Fred's Head to help me remember.
If you live in the U.S. and want to call outside the country, you must first dial 011. This is then followed by the country code and the phone number. In the case of England, the country code is 44. You can get international country calling codes and world time zone information by visiting http://www.countrycallingcodes.com.