Contact AT&T and tell them that you are going to Europe and want an international plan for the specific time periods. It will definitely cost you more, but not as outrageous as other options.
I am in the US Navy and travel all over. I specifically asked this question when setting up my plan last October.
cool, ya i expect it wont be cheap, but its gotta be better then $4 a min right? im certainly not gonna be on my phone all the time but ill want to keep in touch with my family and keep them updated on how im doing (mothers ya know....). anyone got a clue on how to get web service? im gonna bring my laptop to do all my homework on, but would like to be able to surf the web from the boat or hotels in port.....do those sprint/verizon usb modem things work over there?